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Review · Fantasy dildo · Vibrating silicone with suction cup

Hidden Desire Vibrating Demon Monster Dildo 28 cm: review

Hidden Desire’s largest vibrating monster dildo reviewed against the manufacturer’s own dimension drawing and pricing data from five Swedish stores. 28 centimeters total, 18 centimeters insertable, 7.5 centimeters in diameter, and 100 percent body-safe silicone — but a specification where neither battery, charge time, enclosure rating, nor warranty period is published by the manufacturer.

6.9Fair
Place 17 of 24in fantasy dildo best

Elin Sandberg · Updated 13 September 2026 · 14 min read

My rating

One of the few vibrating fantasy dildos in this size class with a dimension drawing published by the manufacturer: 28 centimeters total, 18 centimeters insertable, 7.5 centimeters in diameter, and 10 centimeters wide. The material is 100 percent body-safe silicone, and the boost function has its own button. What you pay for is the documentation — the manufacturer does not publish battery capacity, operating time, charging time, charging connector, ingress protection rating, or warranty period, and IPX7 is listed only by the stores. The smallest model in the series costs 400 SEK less with the same technical description.

  • Manufacturer’s dimension drawing: 28 cm total, 18 cm insertable, Ø 7.5 cm, 10 cm wide
  • 100% body-safe silicone according to the product page and packaging
  • Nine vibration modes plus boost — but the number of modes comes from the stores
  • Suction cup base for hands-free use; compatible according to the manufacturer
  • Neither the battery, charging time, nor the IP rating is published by Hidden Desire
  • 549–895 SEK at five stores for the same EAN; four had it in stock

Hidden Desire Vibrating Demon Monster Dildo in brief

Vibrating Demon Monster Dildo is the most expensive model in Hidden Desire’s range of vibrating monster dildos, and the largest. The manufacturer’s own dimensional drawing states 28 centimeters total length, 18 centimeters insertable length, 7.5 centimeters as the largest diameter, and 10 centimeters as the largest width across the base. The material is stated as 100 percent body-safe silicone, and the product has a boost function in addition to the usual vibration modes, as well as a suction cup that, according to the manufacturer, adheres to any smooth surface.

This review is about the black variant with EAN 8713221836571, which the manufacturer lists with the article number 16838-BLACK. The number is verified directly in the page source on Hidden Desire’s own product page, and the same number is listed as reference and EAN13 at Sexonic and as the article number at Vuxen. The model is sold only in black—there are no color variants in the series to mix up.

The price range in Sweden is unusually wide. Five stores sell the item for between 549 and 895 SEK at the price check on September 12, 2026, and four of them had it in stock. It’s 346 SEK, or a 63 percent difference, for the exact same article number and the same packaging. On the manufacturer’s own site, the list price is 89.99 euro, which is the highest price across the entire vibrating monster series.

What can already be concluded here is that the documentation is uneven. The manufacturer provides measurements, material, boost function, and suction cup with its own dimensional drawing and its own product images—but it publishes neither weight, battery capacity, operating time, charging time, charging connector, enclosure rating, sound level, Shore hardness, nor warranty period. So a large part of what Swedish store texts present as facts about this product does not come from Hidden Desire, and this is marked throughout the text below.

What is a monster dildo, and where does Demon stand?

Monster dildo or fantasy dildo is the category name for dildos that intentionally depart from realistic anatomy. In practice, that means two things: the shape is imaginative—dragon, demon, tentacle, dinosaur—and the dimensions are larger than what a realistic model usually offers. Demon belongs more to the second half of that definition than the first. The shape is still roughly penis-like with a veined surface and a sculpted scrotum, but the proportions are dramatically upscaled.

Compared with the range as a whole, it’s the diameter that determines how the product should be read. A largest diameter of 7.5 centimeters corresponds to a circumference of about 23.5 centimeters, and that figure places the model well outside the beginner segment. For comparison, the manufacturer of the Mythical Mates Another World Dildo lists a total length of 22.4 centimeters and an insertable length of 19.3 centimeters for a product sold in the same store category—but one that is significantly narrower and has no motor at all.

What sets Demon apart from most products in the category is the combination of size and electronics. The vast majority of monster dildos are massive silicone castings without moving parts. Here, instead, there’s a motor, a rechargeable battery, and two buttons in the base, resulting in a product that’s both large and needs to be charged. The manufacturer’s own product image shows the two slider buttons molded into the silicone on the underside of the shaft just above the suction cup, along with CE and UKCA markings in the same casting.

Hidden Desire? Demon, Dragon, Devil, or Dinosaur—who’s who?

Hidden Desire sells four vibrating monster dildos under the EXTREME label, and they share the same basic technology but differ in shape and price. The packaging for Demon lists the subcategory Monster Cocks, which is the most realistic of the shape families in the series.

  • Demon — the model this text is about. Item number 16838-BLACK, EAN 8713221836571, list price 89.99 euro. Most expensive in the series.
  • Dragon — item number 16839-BLACK, EAN 8713221836588, list price 82.99 euro. Dragon-inspired shape with a different texture.
  • Devil — item number 16840-BLACK, EAN 8713221836595, list price 79.99 euro.
  • Dinosaur — item number 16841-BLACK, EAN 8713221836601, list price 79.99 euro. The smallest and cheapest in the series.

The same ranking appears in Swedish kronor. The retailer Joyland lists the sibling models on its product page at 495 SEK for Dinosaur, 795 SEK for Devil, and 849 SEK for Dragon, versus 895 SEK for Demon. That Demon is the most expensive in the series both from the manufacturer and in the store points in the same direction: it’s size, not the functions, that costs. All four are described by the manufacturer with the same technical keywords—body-safe silicone, vibrations in multiple modes, a boost function, and a suction-cup base.

Materials and build quality: 100 percent silicone, one-piece

Material is the only property of an intimate product that cannot be compensated for with experience or care, and it determines whether the product is still hygienic after a few years. Here is the manufacturer’s message, unambiguously: Hidden Desire states 100 percent body-safe silicone in the product description, and the packaging bears the labeling 100 percent soft-silicone. In the manufacturer’s own description of the entire EXTREME series, the word pore-free is also added, together with the wording that the material is durable and easy to clean.

What body-safe silicone means in practice

Silicone is a pore-free material. A pore-free surface can be cleaned, because there are no microscopic cavities in which residue can remain. It is the single most important property of a material that is meant to lie against mucous membranes, and it is why the material declaration weighs more heavily than almost every other line in a specification.

The opposite in this price category is soft-processed PVC and TPE. Both occur in many fantasy sex-doll models because they’re cheaper to cast in large volumes, but both are porous to varying degrees and generally require plasticizers to become flexible. That Hidden Desire lists silicone — and not just “body-safe material” — is therefore a specific message, not a cliché. In practice, it means the product can be cleaned properly and that it can withstand warm water and mild soap without the surface breaking down.

What the manufacturer, on the other hand, does not publish is the silicone type, the shore hardness, or whether the casting is single-density or double-density. The retailer Joyland fills in part of that: in the store’s specification table, the hardness is listed as “medium” and the surface as veined. This is a store statement and not a manufacturer specification, but it is useful as an order of magnitude — medium-hard silicone is flexible enough to be bent slightly, but stiff enough to keep its shape in a strap.

Phthalates and plasticizers — why the material line is important

Phthalates are a group of plasticizers used to make plastic — above all soft-processed PVC — flexible. The Swedish Chemicals Agency (Kemikalieinspektionen) describes them as substances that can affect the hormone system and make reproduction more difficult, and several of them are therefore restricted or prohibited within the EU in a large number of products. This product category is repeatedly the subject of supervision, precisely because it contains soft plastic that lies against skin and mucous membranes.

Silicone does not require phthalate softeners to become soft. The softness comes from the polymer’s own structure, and therefore silicone as a material specification in itself is better information than almost any other entry in a product specification. Hidden Desire, however, never prints the word phthalate-free on the product page. That information comes from the retailer Joyland, which states “Phthalate-free: Ja” in its own specification table. It is a store claim. It is reasonable given the material choice, but it is not a manufacturer commitment, and that difference should be made clear instead of being blurred out.

The latex question is not addressed by either the manufacturer or the retailers. Silicone normally does not contain natural rubber latex, but anyone who has confirmed a latex allergy should note that no party explicitly declares it for this item.

Dimensions: 28 cm total, 18 cm insertable, and Ø 7,5 cm

The manufacturer publishes its own dimension drawing for item 16838, and it is unusually detailed for the price category. It lists four measurements: 28 centimeters total length, 18 centimeters insertable length, 7,5 centimeters largest diameter, and 10 centimeters largest width. A second product image from the same gallery repeats the total length with a dimension line that is labeled 28 cm.

The width of 10 centimeters is the figure that is usually omitted and yet determines the most in everyday life. It refers to the product’s widest section, meaning the shaft with the sculpted scrotum beside it, and it determines how much space the product requires in a drawer and how large a storage pouch needs to be. It is also the measurement that explains why a model like this is hard to store discreetly.

An 18-centimeter insertable length out of 28 means that a little over ten centimeters of the product is the base, scrotum, and control-part section. That is a high proportion compared with slender dildos, and it comes down to two things: the sculpted scrotum takes up space, and the electronics have to fit somewhere. Practically speaking, that means that anyone who measures the total length in the store text and assumes they can use all of it will end up calculating wrong by ten centimeters.

Why does it say 21.5 cm in some stores?

There is a genuine conflict in the sources here, and it is worth sorting out before you order the product. The manufacturer’s dimension drawing states 18 centimeters insertable length. Vuxen states 21,5 centimeters both in the product description and in the quick facts box. Blush Me also contradicts itself on the same page: the feature table at the top states 21,50 centimeters, while the description text further down states 18 centimeters.

SexleksakerOutlet and Joyland both state 18 centimeters, in line with the manufacturer. Joyland calls the measurement "penetrating length." When a shop listing goes against the manufacturer’s own drawing, the manufacturer wins, and this site therefore lists 18 centimeters as the insertable length. The deviation of 3.5 centimeters is still large enough to affect a purchase decision, and that is why it is printed here instead of being quietly suppressed.

A second, smaller deviation is found in the total length. All Swedish retailers and the manufacturer’s own measurement drawing state 28 centimeters. The Spanish retailer Intimico, which sells the same EAN, instead states 27 centimeters. It is a one-centimeter deviation from the manufacturer’s own drawing, and it is therefore likely a rounding or an error in the retailer’s own text, but it explains why individual online listings refer to a 27-centimeter model.

Weight is not published by the manufacturer. The weight field in Hidden Desires’s own product data is blank, and neither the product page nor the measurement drawing indicates any grams or kilograms. Retailers Blush Me and SexleksakerOutlet state 1 kilo in their description texts. It is a shop claim; it is given in whole kilos, and it is therefore not a precise measurement—however, it is reasonable for a massive silicone casting of these dimensions, and it says something important: this is a product that a suction cup is meant to hold up, and one kilo places demands on the surface.

Nine positions, a boost button, and a suction cup

The interface consists of two buttons, molded into the silicone on the underside of the shaft just above the suction cup. The manufacturer’s own product image shows them clearly: the upper one is marked with a lightning symbol, the lower one with a classic power symbol. The lightning symbol corresponds to the boost function that the manufacturer highlights in the product description; the power symbol turns the product on and off.

How many vibration modes the product has is not published by the manufacturer. Hidden Desire only writes "powerful vibrations" and, in its series text, "vibrations in multiple modes". The number nine comes from the retailers: Blush Me, SexleksakerOutlet, and Joyland all state nine vibration modes, and Joyland specifies it as "9 different steps" in its specification table. Intimico lists nine vibration patterns. Four independent retail sources saying the same thing is a strong indication, but it is still not a manufacturer claim, and that difference is presented here.

What can be confirmed purely from a design standpoint is that two buttons and nine modes mean stepping in a single direction. Without a minus button, you have to scroll around the entire turn to return one step. That’s standard in this price range, but it’s a practical difference compared with vibrators that have separate plus and minus—and it matters extra here, because the buttons are positioned near the base and therefore aren’t visible during use.

What the boost function does

Boost is the manufacturer’s own term, and Hidden Desire describes it as an innovative function that delivers the most powerful vibrations. The series text formulates it as meaning that the boost function creates the series’ strongest vibrations, i.e., a mode above the usual range rather than an additional pattern within it.

What that means in practice is that you have two independent controls: one that scrolls between modes, and one that takes the motor to maximum power directly. The manufacturer does not publish how long boost can be kept running, whether the mode shuts off automatically, or how much power it adds. Neither of the stores lists it either. What’s reasonable to expect from a boost function in this kind of design is that it draws more current and therefore shortens run time—but since no run time is published, it’s not possible to put a number on it.

The suction cup, the selenium, and hands-free use

The suction cup is the function the manufacturer describes in the most detail. The product page states that the stable suction-cup base enables hands-free use on any smooth surface, and the series text adds two things: that the base adheres to smooth, flat surfaces and that it makes the dildo compatible with a strap-on harness.

Strap-on compatible means that the base fits into a strap-on harness with an O-ring. It’s a feature that assumes the base flange is wide enough and that the shaft directly above it is narrow enough to be clamped into place in the ring. Here there’s an additional practical objection that doesn’t appear in any store text: the control buttons sit exactly on the section that ends up against the harness ring. In practice, that means that access to the buttons is worse when using it with a strap-on harness than when the product is used freely or on a surface to which the suction cup adheres.

For hands-free use, weight is the deciding factor. The stores’ statement of one kilogram means the suction cup should be able to hold a heavy product that is also loaded at an angle. So smooth, clean, and dry surfaces are not a suggestion but a requirement—tile, glass, enamel, or a painted panel work, while porous stone, textured wood, and matte surfaces do not. The manufacturer’s series text particularly emphasizes that the surface should be both smooth and flat—a wording that’s more restrictive than the stores’ text “all smooth surfaces”.

How do you handle 7.5 centimeters in diameter?

This product is not a beginner product, and that figure is what indicates that. A 7.5-centimeter diameter corresponds to a circumference of about 23.5 centimeters—more than twice as much as an average realistic dildo in the standard range. Combined with an 18-centimeter insertable length, the volume is significant.

Practically speaking, that means three things. Plenty of water-based lubricant is a prerequisite, not an improvement; Joyland expressly lists water-based lubricant as the recommended one. Warming up with smaller products first is the standard advice in the category, and it applies just as much here. And the ridged surface, which Joyland describes in its specification table and which is clearly visible in the manufacturer’s product images, increases friction even further—the texture is part of what the product is about, but it also means the lubricant needs to be replenished more often than on a smooth surface.

Water resistance: IPX7 is listed by the shops, not by the manufacturer.

This is the point where the difference between manufacturer data and shop data has the greatest practical impact. Hidden Desire does not publish any ingress protection rating for Vibrating Demon Monster Dildo—neither IPX7 nor any other IP designation appears on the product page, in the series text, or in any of the product images.

IPX7, on the other hand, is stated by four shops. Blush Me and SexleksakerOutlet write “IPX7 Waterproof” in their bullet lists, Joyland states that the waterproof design (IPX7) means the product can be used in the shower and bath, and Intimico indicates the same rating. Vuxen simply checks off “Waterproof: Yes” without providing a rating. So the information is consistent across the shops, but it lacks grounding with the manufacturer, and that’s how it should be read.

What IPX7 means according to IEC 60529

The rating comes from the international standard IEC 60529, which defines ingress protection ratings for electrical equipment. The number 7 in the second position means the product is tested for submersion in water to a depth of one meter for 30 minutes. X in the first position means that protection against solid objects is not rated, which is normal for this type of product.

The difference from a splash-resistant product is greater than the wording suggests. Splash protection covers water droplets and, at best, water jets, but not submersion. Such a product can handle a damp cloth and possibly a shower, but not a bathtub. With a genuine IPX7 rating, the entire product can be rinsed off without having to think about buttons and the charging connection.

Because the manufacturer does not confirm the rating, the practical advice is to be cautious: rinse the product under running water, but avoid putting it submerged in a filled bathtub until the manufacturer itself states an IP rating. That’s the only recommendation that can be justified with the sources available.

Cleaning, lubricant, and storage

Cleaning is easy precisely because the product is molded in one piece of silicone, without removable parts. Rinse with lukewarm water after every use and use fragrance-free soap or a cleaning agent intended for intimate products. The ridged texture and the sculpted scrotum are the areas where residue is easiest to leave behind, and they benefit from a soft brush or a cloth instead of just your hand. Let the product air-dry before putting it away.

The choice of lubricant is not up for negotiation with a silicone product. Use a water-based lubricant—Joyland expressly states it as recommended in its specification table. Do not use silicone-based lubricant on silicone: over time it breaks down the surface and makes it porous, and a porous surface can no longer be cleaned properly—only replaced. Oil-based products like coconut oil leave a film that’s hard to remove and that attracts dirt.

Storage deserves its own line for this particular model. The manufacturer’s serial text emphasizes that the silicone is durable and easy to clean, but a massive silicone body measuring 28 by 10 centimeters still needs to have its own space. Silicone that is stored in contact with other silicone or with soft plastic can, over time, take on color or become tacky, and the ridged surface also attracts dust if the product is stored uncovered.

Battery and charging: where the documentation runs out

This is the specification’s weakest point, and it’s worth being clear about. Hidden Desire does not publish any battery capacity in mAh, no voltage, no runtime, no charging time, and no information about the type of charging connector. The product page doesn’t even mention that the product is rechargeable—the only thing the manufacturer writes about operation is that the product vibrates and has a boost function.

How is the Vibrating Demon Monster Dildo charged?

Everything you can go by comes from the shops. Blush Me lists "Charging type: USB" in its feature table. SexleksakerOutlet writes "USB-rechargeable". Joyland lists the battery type "Rechargeable via USB" and writes in the product text that it charges via the included USB cable. Vuxen lists operation as "Rechargeable" without specifying the connector. Intimico lists a rechargeable lithium-ion battery.

What this means in practice is that a USB cable is most likely included, but you don’t know whether the cable is a standard USB-C cable or a magnetic connector that only fits this specific product. The difference isn’t theoretical: a magnetic cable that gets lost can be impossible to replace, while a USB-C connector can be used to charge with any cable. Since the product is marketed as waterproof, the design logic points to a magnetic connector—an open USB port is harder to seal—but that’s a conclusion, not a stated fact, and it should be treated as a question to ask the store before buying.

Without capacity, you also can’t convert the runtime into anything comparable. The only thing that can be said is the general one: lithium-ion batteries lose capacity with the number of charge cycles, they do best when charged regularly rather than being stored completely drained, and in this type of product they’re fixed in place in the silicone. Once the cell is used up, the product is effectively used up as well—you can’t replace the battery in a fully encapsulated silicone body.

Is there any manual for the model?

No. Hidden Desire does not publish an instruction manual for the vibrating monster dildos. The manufacturer’s User Manuals page contains a generic manual for vibrating anal toys as well as specific manuals for electrostimulation products, chastity cages, masturbators, sex vibrators, and sex machines—but none for item 16838 or for any other product in the monster series.

It’s a real shortcoming and not just a formality. In the manual, manufacturers usually list the battery type, charging time, runtime, and temperature limits, and that’s normally where the instructions for how many times you have to press to access each mode are given. So anyone who buys this product will have to learn the button sequence by trial and error, and everything related to charging is left to the packaging’s own text.

Where can you buy it — and what does it cost?

We do not have price data from shops in your market yet.

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The manufacturer lists four measurements in its own drawing—but not a single battery value, no charging time, and no ingress protection rating.
Specifications from Hidden Desire, September 12, 2026

Pros

  • The manufacturer’s own dimension drawing shows four measurements: 28 cm, 18 cm, 7,5 cm, and 10 cm
  • 100 percent body-safe silicone according to both the product page and the packaging
  • Non-porous material that the manufacturer itself describes as easy to clean
  • Boost function in addition to the usual vibration modes, with its own button
  • Suction cup base for hands-free use, strap-compatible, according to the manufacturer
  • The cheapest store charges 549 SEK versus 899 SEK in the recommended price — 39 percent below

Cons

  • The manufacturer publishes neither battery capacity, operating time, charging time, nor charging connector
  • IPX7 comes only from the stores — Hidden Desire states no enclosure rating
  • No user manual for the model is available on the manufacturer’s manuals page
  • No manufacturer warranty is published, either by Hidden Desire or by the stores
  • Adult and Blush Me states an insertable length of 21.5 cm, versus the manufacturer’s 18 cm
  • The weight is not published by the manufacturer; the stores list 1 kg in whole kilograms
  • The price differs by 63 percent between the cheapest and the most expensive store

The rating in detail: five criteria, the same for the entire category

6.9Fair
Materials and hygiene
7,5
100% body-safe silicone, pore-free according to the manufacturer. Clean around the motor housing.
Shape and fit
3,5
28 cm long, Ø 7.5 cm and 10 cm wide — the roughest measurements in the field and a very narrow target group.
Base and hands-free
7,8
Suction-cup base that, according to the manufacturer, also stays in place on a strap — unusual for a vibrating model.
Versatility and function
8,8
Nine modes, boost on its own button, suction cup and strap — the most features in the field after Titan.
Price-to-performance
7,0
549 SEK versus 899 SEK in list price. The sister model Dragon offers the same function for 100 SEK less.

Vibrating Demon Monster Dildo compared with the alternatives

Three comparisons are relevant: against the two closest sibling models in the same series, and against a fantasy dildo without a motor from the same shop shelf. All information below comes from the respective manufacturers’ own specifications, and all Swedish prices come from the shops’ product feeds or the shops’ own product pages on September 12, 2026.

Against the Hidden Desire Vibrating Dragon Monster Dildo

Dragon is the closest competitor and comes from the same manufacturer, the same series, and the same technology platform. The item number is 16839-BLACK and EAN 8713221836588. From the manufacturer it costs 82.99 euros, compared with Demon’s 89.99 euros—so seven euros less. At Joyland the difference is 46 SEK: 849 SEK versus 895 SEK for Demon.

The manufacturer’s descriptions of the two models are, in practice, identical except for the theme—same 100 percent body-safe silicone, same powerful vibrations, same boost function, and the same stable suction-cup base. The difference lies in the shape and size. Hidden Desire does not publish its own measurement drawing for Dragon that corresponds to the one for Demon, which means a direct size comparison against manufacturer data can’t be made. What can be established is that Demon is more expensive in both currencies, and that the price order in the lineup follows size rather than the functions.

So the conclusion is simple: if you choose between Demon and Dragon, you’re choosing based on the shape and on how much you want, not on the functions. Same motor, same material, same boost function, same suction cup—and a price difference that, at the priciest Swedish shop, corresponds to a little over five percent.

Against Hidden Desire Vibrating Dinosaur Monster Dildo

Dinosaur is the lineup’s entry model: item number 16841-BLACK, EAN 8713221836601, and a list price of 79.99 euros from the manufacturer—10 euros less than Demon. In Sweden, the difference is dramatically much larger. Joyland lists Dinosaur at 495 SEK versus 895 SEK for Demon—400 SEK, or 45 percent less for a product from the same series with the same material listing and the same function description from the manufacturer.

That’s the comparison that should stop most purchases of Demon. If what you want is a vibrating silicone dildo with a boost function and a suction cup, and you don’t specifically need a 7.5-centimeter diameter and an 18-centimeter insertable length, you get the same technology for almost half the price in the series’ smallest model. Demon sells size, and size is the only thing it sells more expensively than the siblings.

Against Mythical Mates Another World Dildo — vibration versus pure silicone casting

The most illuminating comparison goes beyond the brand. Mythical Mates Another World Dildo is sold in the same shop category and is a fantasy dildo in silicone with an extra-strong suction cup, but without a motor and without a battery. The manufacturer states a total length of 22.4 centimeters and an insertable length of 19.3 centimeters.

What’s interesting is that the non-vibrating model has a longer insertable length than Demon: 19.3 versus 18 centimeters, despite Demon being 5.6 centimeters longer overall. That’s exactly the effect described earlier—the electronics, the controls, and the sculpted scrotum take up ten of Demon’s 28 centimeters, while a solid cast can use almost its entire length.

The trade-off becomes concrete. A dildo without a motor has no battery that ages, no charging port to seal, no undocumented runtime, and nothing that can stop working. A dildo with a motor adds vibration and a boost function, but you buy it with the electronics’ entire risk profile—and in this case with documentation that does not present a single battery value. If you want vibration, Demon is one of the few options in this size. If you don’t want it, it’s a pure silicone cast—both cheaper and more predictable.

Price range: 549 to 895 SEK at five stores

Five Swedish stores sell the item with EAN 8713221836571. The lowest price is Blush Me and SexleksakerOutlet at 549 SEK each, and the highest is Joyland at 895 SEK. That’s 346 SEK or a 63 percent difference for the same item number, the same color, and the same packaging. In between are Vuxen at 629 SEK and Sexonic at 801 SEK.

Four of the five stores had the product in stock during the price check. The exception was Sexonic, which at 801 SEK is still the second-highest on the list—which means that stock status doesn’t affect the price you can actually pay. The cheapest available price is 549 SEK, and the second-cheapest available is Vuxen’s 629 SEK.

Two of the stores also list the regular price. Both Blush Me and SexleksakerOutlet state 899 SEK as the original price versus 549 SEK in the promotion, i.e. a 39 percent discount, while Vuxen lists 899 SEK as the recommended price versus 629 SEK. The fact that three stores independently use 899 SEK as the reference level suggests that this is the price the distributor recommends in Sweden—and that Joyland’s 895 SEK is therefore, in practice, full price rather than a markup.

Factor in shipping before you compare. Joyland states free shipping over 995 SEK and shipping from 29 SEK below that, which means that a single order of this product always lands below the free-shipping threshold. The prices in the table above are updated when the stores’ product feeds are updated, but always check the final price at checkout.

Who is it for—and who is it not for?

It’s for you if you specifically want a large fantasy dildo with vibration and you already know that a 7.5-centimeter diameter is a size you can handle. It’s for you if you want silicone rather than soft-molded PVC in that size range, if you want to be able to attach the product to a smooth surface for hands-free use, and if you want to be able to use the same product with a harness. The manufacturer’s dimension drawing is also unusually clear for the price range—four measurements shown in the picture are more than most competitors offer.

It doesn’t fit you if you’re new to the category. An insertable length of 18 centimeters and a diameter of 7.5 centimeters aren’t beginner measurements, and no part of the specifications makes the product more forgiving than the numbers suggest. It also doesn’t fit you if you require published battery values before purchase: neither capacity, operating time, charging time, nor the charging connector are stated anywhere on the manufacturer’s website. And it doesn’t fit you if you want a product you can put into a full bathtub without hesitation—IPX7 comes from the shops, not from Hidden Desire.

One last objection belongs in the decision, and it’s about price versus the sibling model. At the most expensive Swedish store, Demon costs 895 SEK, while the series’ Dinosaur costs 495. The manufacturer describes both with the same materials, the same boost function, and the same suction-cup base. If you pay the extra 400 SEK, you should do it for the size and shape—with open eyes—not because you think the more expensive model has more technology. It doesn’t—at least not according to the manufacturer’s own documentation.

Warranty, complaints, and right of withdrawal

Hidden Desire doesn’t publish any voluntary manufacturer warranty. The manufacturer’s general terms include company information, payment and delivery terms, and a disclaimer for technical data from suppliers, but no section about warranty duration for the products. None of the five Swedish shops states a manufacturer warranty for this article either.

What does apply, however, is your statutory rights, and they are stronger than many think. According to the konsumentköplagen (Swedish Consumer Sales Act), you have a three-year right to complain about defects in the goods, regardless of what the manufacturer does or does not promise. In distance purchases, you also have a right of withdrawal for fourteen days under the lagen om distansavtal och avtal utanför affärslokaler (Act on Distance Contracts and Contracts Outside Business Premises).

Be aware that in practice the right of withdrawal is limited for hygiene products that have been removed from a sealed package—Konsumentverket (the Swedish Consumer Agency) explains the exception in its guidance. The right to make a complaint for defects, on the other hand, always applies. Individual stores may offer more: Joyland states 365 days of open purchase for an intact, unopened package, which is significantly more generous than the legal requirement but therefore assumes that the packaging is unopened.

If you buy directly from the manufacturer, other terms apply than at the Swedish stores. Hidden Desire’s own terms state a 30-calendar-day right of withdrawal counted from the day after delivery, with no requirement to provide reasons. The company behind the brand is registered in Wijchen in the Netherlands with company registration number 69251665, and that is also the party an eventual warranty issue would need to be directed to—if there were any warranty to claim.

Specifications: dimensions, material, function, battery and warranty

Dimensions and weight

Total length
28 cm
The manufacturer’s own measurement drawing
Insertable length
18 cm
The manufacturer’s measurement drawing. Vuxen and Blush Me state 21.5 cm in their specification tables
Max diameter
Ø 7.5 cm
Corresponds to about 23.5 cm in circumference
Max width
10 cm
Over shaft and scrotum according to the measurement drawing
Weight
Not published by the manufacturer
Blush Me and SexleksakerOutlet list 1 kg in their description texts
Packaging dimensions
Not published by the manufacturer

Materials and workmanship

Material
100% body-safe silicone
The packaging states 100% soft silicone. The series text states pore-free silicone.
Color
Black
The only variant — article number 16838-BLACK
Surface
Veined texture
Store information from Joyland
Hardness
Medium
Store information from Joyland. The Shore value is not published
Shore hardness
Not published by the manufacturer
Phthalate-free
Yes according to Joyland
The manufacturer does not print the word phthalate-free
Base
Suction cup
Compatible with the manufacturer’s serial number

Function

Vibration
Yes
Marked VIBRATING on the product image and packaging
Vibration modes
9 according to the stores
The manufacturer only states "vibrations in several modes"
Boost function
Yes
Dedicated button with a lightning symbol. Power and duration are not published
Number of buttons
2
Boost and on/off, molded into the silicone at the base
App control
No
Remote control
No
Water resistance
IPX7 according to the stores
Immersion 1 m for 30 minutes according to IEC 60529. The manufacturer does not publish an IP rating
Sound level
Not published by the manufacturer

Battery and charging

Battery type
Rechargeable lithium-ion according to retailers
The manufacturer does not state a battery type
Capacity
Not published by the manufacturer
Operating time
Not published by the manufacturer
Charging time
Not published by the manufacturer
Charging connector
USB according to the stores
The connector type is not specified — neither USB-C nor magnetic is stated
Replaceable battery
No
One-piece silicone body without a battery cover

Purchase, delivery, and warranty

EAN
8713221836571
Verified in the side source on the manufacturer’s product page
Item number
16838-BLACK
Series: Extreme by Hidden Desire, Monster Cocks
Included
Product and USB charging cable according to Joyland
The manufacturer does not publish any delivery contents
Marking
CE and UKCA
Molded into the silicone at the base
Price
549–895 SEK
Five stores, checked on September 12, 2026
Manufacturer’s list price
89,99 euro
Manufacturer warranty
Not published by the manufacturer
Right of complaint
3 years
According to the Swedish Consumer Sales Act (konsumentköplagen), regardless of the manufacturer’s warranty

Common questions about Hidden Desire Vibrating Demon Monster Dildo

How big is the Hidden Desire Vibrating Demon Monster Dildo really?
The manufacturer’s own measurement drawing for item 16838 states four measurements: 28 centimeters total length, 18 centimeters insertable length, 7.5 centimeters largest diameter, and 10 centimeters largest width across the shaft and balls. This means that ten of the 28 centimeters consist of the base, the balls, and the control part and therefore are not insertable. The diameter of 7.5 centimeters corresponds to a circumference of approximately 23.5 centimeters, which places the model far outside the beginner segment.
Why do some stores list an insertable length of 21.5 cm instead of 18 cm?
There is a genuine discrepancy between the sources. Adult states 21.5 centimeters in both the product description and in the quick facts box, and Blush Me lists 21.50 centimeters in its specification table—while Blush Me’s own description text further down on the same page states 18 centimeters. SexleksakerOutlet and Joyland list 18 centimeters, in line with the manufacturer’s measurement drawing. When a store’s claim conflicts with the manufacturer’s own drawing, it is the manufacturer’s figure that applies—so the correct number is therefore 18 centimeters. The difference of 3.5 centimeters is large enough to affect a purchasing decision, which is why it is presented here.
How many vibration modes does it have, and what does the boost function do?
Hidden Desire does not publish a number of modes. The manufacturer only states that the product provides powerful vibrations and, in the product description text, vibrations in multiple modes. The number nine comes from the retailers: Blush Me, SexleksakerOutlet, Joyland, and the Spanish store Intimico all list nine modes or patterns. Boost, on the other hand, is the manufacturer’s own term and is described as an innovative function that provides the most powerful vibrations—i.e., a mode above the usual range, with its own button labeled with a lightning symbol. How much power boost adds, and for how long the mode can be kept running, is not published.
Is the Hidden Desire Vibrating Demon Monster Dildo waterproof?
Four stores list IPX7, but Hidden Desire publishes no ingress protection rating at all—neither on the product page, in the series text, nor in the product images. IPX7, according to the standard IEC 60529, means the product has been tested for immersion in water to a depth of one meter for 30 minutes. Since the manufacturer does not confirm the rating, the practical recommendation is to rinse the product under running water but avoid immersing it in a filled bathtub until an IP rating is published by the manufacturer itself.
How is it charged, and how long does the battery last?
The manufacturer publishes neither battery capacity, voltage, operating time, charging time, nor the type of the charging connector. Everything that exists comes from the stores: Blush Me states a USB charging type, SexleksakerOutlet writes USB-rechargeable, Joyland states a rechargeable battery type via USB with the included cable, and Intimico states a rechargeable lithium-ion battery. Whether the cable is a standard USB-C cable or a product-specific magnetic connector is not shown by any source, which is worth asking the store about before purchase—a lost magnetic cable can be difficult to replace.
What’s the difference between Demon, Dragon, Devil, and Dinosaur?
The four models in Hidden Desire’s vibrating monster series share the same technical description: 100% body-safe silicone, powerful vibrations, a boost function, and a suction-cup base. The difference is in shape and size, and that shows in the price. With the manufacturer, Demon costs 89.99 euros, Dragon 82.99 euros, and both Devil and Dinosaur 79.99 euros. In Sweden, Joyland lists Dinosaur at 495 SEK, Devil at 795 SEK, Dragon at 849 SEK, and Demon at 895 SEK. So if you choose between them, you’re choosing by shape and size—not by function.
Which lubricant should I use?
Water-based. Joyland explicitly states water-based lubricant as the recommended one in its specification table. Silicone-based lubricant should not be used on a silicone product: it breaks down the surface over time and makes it porous, and a porous surface can no longer be cleaned properly. Oil-based products like coconut oil leave a film that’s hard to remove. On a product with a 7.5-centimeter diameter and a ridged surface, the lubricant also needs to be replenished more often than on a smooth model.
What warranty applies, and what is the lowest price in Sweden?
Hidden Desire does not publish any voluntary manufacturer warranty—neither on the product page nor in the general terms and conditions do they mention any warranty period, and none of the five Swedish shops indicates such a thing either. What remains are your statutory rights: three years of right to lodge a complaint about defects in the goods under the konsumentköplagen and a 14-day right of withdrawal for distance purchases, with the practical exception that the right of withdrawal is limited for sealed hygiene items that have been opened. The price was 549 SEK at both Blush Me and SexleksakerOutlet during the price check on 12 September 2026, versus 895 SEK at Joyland—a difference of 63 percent for the same EAN.

The best-in-test product

Hidden Desire Vibrating Demon Monster Dildo 28 cm is ranked på plats 17 av 24 in fantasy dildo best i test, where the entire category is compared against each other using five shared criteria. Guiden vinns av Mythology Kuno Utopia Dildo 15,5 cm.

Related guides and searches

Om skribenten

Elin Sandberg Founder

I run the site myself and have reviewed 395 products since 2023. Before that, I worked for eight years as a buyer of intimate hygiene products, and that’s where the product knowledge comes from. Each review is based on the manufacturer’s own specifications, product data sheets, and price data from all the shops that sell the product — all sources are at the very bottom of the page and can be checked. I compare the models against each other based on what can actually be verified: materials, dimensions, intensity levels, water-resistance rating, warranty, and price. If you find an error, I want to know about it.
  • 395 reviewed products
  • Has been writing since 2023
  • Sourced specifications
  • Prices from 14 shops

Sources

Every numerical piece of information in the text can be traced to one of the sources below. The links were checked manually on the specified date.

  1. The product name, brand, item number 16838-BLACK, EAN 8713221836571 (verified in the page source), the material 100% body-safe silicone, the innovative boost function, the powerful suction cup for hands-free use on smooth surfaces, and the list price 89,99 euro: Hidden Desire — official product page, Vibrating Demon Monster Dildo — kontrollerad 12 September 2026
  2. The manufacturer’s own measurement drawing for item 16838: total length 28 cm, insertable length 18 cm, largest diameter 7.5 cm, and largest width 10 cm over the base: Hidden Desire — measurement image 16838_BLACK_07 in the product gallery — kontrollerad 12 September 2026
  3. The measurement line indicating total length of 28 cm and the VIBRATING marking in the manufacturer’s own product image: Hidden Desire — product image 16838_BLACK_06 in the product gallery — kontrollerad 12 September 2026
  4. Package text: the series EXTREME by Hidden Desire, the Monster Cocks subcategory, the 100% soft-silicone marking, the VIBRATING symbol, and the model name Demon Vibrating Dildo: Hidden Desire — packaging image 16838_BLACK_02 in the product gallery — kontrollerad 12 September 2026
  5. CE and UKCA markings embedded in the silicone at the base, as well as the two control buttons on the underside of the shaft: Hidden Desire — product image 16838_BLACK_06 in the product gallery — kontrollerad 12 September 2026
  6. The manufacturer’s description of the entire series of vibrating monster dildos: pore-free and body-safe silicone that is durable and easy to clean, vibrations in multiple modes with a boost function, and a large suction-cup base that attaches to smooth, flat surfaces and makes the dildo harness-compatible: Hidden Desire — official product page, Raptor Monster Dildo (same series text) — kontrollerad 12 September 2026
  7. Comparison data for the Hidden Desire Vibrating Dragon Monster Dildo: item number 16839-BLACK, EAN 8713221836588, and list price 82,99 euro: Hidden Desire — official product page, Vibrating Dragon Monster Dildo — kontrollerad 12 September 2026
  8. Comparison data for the Hidden Desire Vibrating Dinosaur Monster Dildo: item number 16841-BLACK, EAN 8713221836601, and list price 79,99 euro: Hidden Desire — official product page, Vibrating Dinosaur Monster Dildo — kontrollerad 12 September 2026
  9. Comparison data for the Hidden Desire Vibrating Devil Monster: item number 16840-BLACK, EAN 8713221836595, and list price 79,99 euro: Hidden Desire — official product page, Vibrating Devil Monster — kontrollerad 12 September 2026
  10. That the manufacturer does not publish any user manual for the vibrating monster dildos — the only general manual on the page applies to vibrating anal toys, and the other manuals apply to electrostimulation, chastity cages, masturbators, sex swings and sex machines: Hidden Desire — page User Manuals — kontrollerad 12 September 2026
  11. The manufacturer’s company details (Hidden Desire, Bijsterhuizen 3151, 6604 LV Wijchen, the Netherlands, company reg. no. 69251665), the 30 calendar-day right of withdrawal in the manufacturer’s own web shop, and that the terms and conditions do not include any voluntary manufacturer warranty: Hidden Desire — Terms and Conditions — kontrollerad 12 September 2026
  12. Store details from Blush Me: price 549 SEK instead of the regular 899 SEK, feature table length 28.00 cm, insertable length 21.50 cm, maximum diameter 7.50 cm, high-quality silicone material, color black and charging type USB — as well as the description text with 9 vibration functions, IPX7, insertable length 18 cm and weight 1 kg: Blush Me — product page — kontrollerad 12 September 2026
  13. Store details from SexleksakerOutlet: price 549 SEK instead of the regular 899 SEK, 9 vibration functions, strong suction cup, IPX7, USB-rechargeable, total length 28 cm, insertable length 18 cm, max diameter 7.5 cm and weight 1 kg: SexleksakerOutlet — product page — kontrollerad 12 September 2026
  14. Store details from Vuxen: price 629 SEK instead of the recommended 899 SEK, item number 8713221836571, quick facts with total length 28 cm, insertable length 21.5 cm, diameter 7.5 cm, waterproof yes, rechargeable for operation, base-type suction cup and textured surface: Vuxen — product page — kontrollerad 12 September 2026
  15. Store details from Joyland: price 895 SEK, item number 28097, specification table with silicone material, ridged surface, medium hardness, 9 vibration modes, waterproof, battery type rechargeable via USB, phthalate-free, recommended water-based lubricant, length 28 cm, penetration length 18 cm and diameter 7.5 cm — as well as IPX7, included USB cable and the Swedish prices of the sibling models (Dinosaur 495 SEK, Devil 795 SEK, Dragon 849 SEK), free shipping over 995 SEK and 365 days of open purchase with unopened packaging: Joyland — product page — kontrollerad 12 September 2026
  16. Store details from Sexonic: reference and EAN13 8713221836571, brand Hidden Desire, and the list price 89.99 euro: Sexonic — product page — kontrollerad 12 September 2026
  17. Information from a retailer outside our list, and the only source that states 27 cm instead of 28 cm total length: 27 cm total, 18 cm insertable, 7.5 cm diameter, 9 vibration patterns, IPX7 and rechargeable lithium-ion battery: Intimico — product page for EAN 8713221836571 — kontrollerad 12 September 2026
  18. Comparison data for Mythical Mates Another World Dildo: total length 22.4 cm, insertable length 19.3 cm, silicone and extra strong suction cup, without a motor and without a battery: EDC Wholesale / One-DC — official product sheet — kontrollerad 12 September 2026
  19. Definitionen of the IPX7 enclosure rating (immersion 1 meter for 30 minutes): IEC 60529 — Degrees of protection provided by enclosures — kontrollerad 12 September 2026
  20. Phthalates used as plasticizers, health effects, and limitations within the EU: Kemikalieinspektionen — kontrollerad 12 September 2026
  21. Three-year right to complain about defects in the product: Konsumentköplag (2022:260) — Sveriges riksdag (the Swedish Parliament) — kontrollerad 12 September 2026
  22. Fourteen days right of withdrawal for distance purchases: Lag (2005:59) om distansavtal och avtal utanför affärslokaler — Sveriges riksdag — kontrollerad 12 September 2026
  23. Guidance on the right of withdrawal and the exception for sealed hygiene items: Konsumentverket — kontrollerad 12 September 2026
  24. Prices, stock status, and article number at five stores for EAN 8713221836571. Retrieved from the stores’ own product feeds on September 12, 2026: Adtraction (Testkollen channel) and Addrevenue (Testra channel) — kontrollerad 12 September 2026

This page is machine-translated from Swedish. Read the Swedish original