Lovetoy Knights Ring Dual Purpose Sleeve Wavy: review

Lovetoy Knights Ring Dual Purpose Sleeve Wavy — in brief

Knights Ring Vibrating Dual Purpose Sleeve — Wavy is a TPE penis sleeve with a removable mini vibrator, and it is sold as a penis sleeve. The manufacturer Lovetoy sells it under the Knights Ring brand line and calls it in its own web shop Knights Ring Duo Vibrating Sleeve. The item number is LV314113 and the EAN number is 6942063402442, and that number is used as the item number exactly as-is at all three shops that list the product.

The specification is short enough to fit in one sentence: total length 13.5 centimeters, internal diameter 3 centimeters, largest outer diameter 6.5 centimeters, product weight 195 grams, material TPE, white color, a single vibration speed, and power supplied via a CR2032 button cell that is included in the package. The manufacturer promises at least a 55 percent increase in circumference. In this market, no shop in our data sells the product.

This review is about the white Wavy variant with EAN 6942063402442. Lovetoy sells the same construction in two other textures—Spiral and Drip—and they have their own EAN numbers. Check the number if you’re comparing prices, because the shops list the three variants on nearly identical product pages with exactly the same description text.

One thing is worth mentioning already here, because it affects how the product can be handled. The manufacturer explicitly states in its own product information that the mini vibrator is not waterproof and that it should not be submerged in water. It is not stated in the shop text we reviewed, and that is the single most important piece of information that does not reach the buyer.

What does "dual purpose" mean in practice?

The label dual purpose refers to the fact that the same sleeve is intended to be used in two ways. The manufacturer describes it as both a circumferential penis sleeve for coupling and as a masturbator for personal use, and that is the entire product idea: one and the same piece of TPE with a textured inner channel that can either be slipped on or held in the hand.

What makes it constructively possible is the shape. The sleeve is closed at one end and open at the other, and according to the manufacturer’s dimension sketch, the inner channel is 3 centimeters in diameter, while the actual opening is 1.6 centimeters. According to the manufacturer’s description, the inside is covered with raised knobs, textured nubs, and stimulating ribs. The outside has the wavy profile that gave the variant its name, and it serves two purposes at the same time: it provides grip when the sleeve is used as a masturbator, and it provides friction against the partner when it is used as a sleeve.

In practice, that means you pay once and get two areas of use, but also that neither of them is fully optimized. A dedicated Fleshlight-type masturbator has a rigid outer casing that lets you regulate the pressure; it doesn’t have that. A dedicated penis sleeve doesn’t need a textured interior along its entire length. The construction is a compromise, and it’s reasonable to expect that from a lower-priced product.

Wavy, Spiral, or Drip — what’s the difference between the textures?

Lovetoy makes three Dual Purpose Sleeve models, and they differ in the pattern on the outside. Wavy has the wavy, crosswise ridging. Spiral has a screw-shaped pattern. Drip has a drop-shaped profile. What can be confirmed from the manufacturer’s own specifications is that the difference in everything else is minimal.

• Wavy — item number LV314113, EAN 6942063402442, product weight 195 grams.
• Spiral — item number LV314111, EAN 6942063402428, product weight 194 grams.
• Drip — the same series, listed on the manufacturer’s brand page for Knights Ring.

The dimensions are identical: 13.5 centimeters in total length and Φ3 centimeters on the inside for both Wavy and Spiral, the same TPE, the same CR2032 cell, the same single vibration speed, and the same packaging dimensions 7.5 × 7.5 × 16 centimeters. The only measurable difference in the manufacturer’s specifications is one gram in product weight. In this market, no shop in our data sells the Lovetoy Knights Ring Vibrating Dual Purpose Sleeve — Wavy.

So the choice among the three is purely aesthetic and tactile on the outside. There is no published information stating that any of them has a different inside than the others, and the manufacturer’s description text is word-for-word the same for Wavy and Spiral. Anyone wondering which one is “best” is looking for a difference that the manufacturer doesn’t show.

The name Knights Ring is also confusing, because Lovetoy uses it for two completely different designs. The older Knights Ring is a short vibrating ring — 10 centimeters long and 65 grams — that you slide over the shaft and sometimes also over the scrotum. Dual Purpose Sleeve is a significantly larger sleeve at 13.5 centimeters and 195 grams, which is closed at the top. Stores that list the two together make it easy to buy the wrong product.

Material and build quality: TPE all the way through

The manufacturer lists a single material for the entire sleeve: TPE. The color is given as white, and the store feature table repeats the same information — skin-friendly TPE material, white color. Another shop states in its quick feature table material TPE, softness as soft, and elasticity as stretchable. The three pieces of information say the same thing, and they don’t contradict each other or the manufacturer.

What TPE is, and how it differs from silicone

TPE stands for thermoplastic elastomer and is a category of material rather than a single material. What they have in common is that they behave like rubber at room temperature, but they can be melted and re-molded like a regular plastic. That property is exactly what makes TPE cheap to injection-mold in large series.

The difference versus silicone is crucial for hygiene, and it’s worth understanding before buying. Silicone is non-porous. A non-porous surface can be cleaned, because there are no microscopic cavities where residue can be left behind. TPE material is generally not non-porous in the same way, which means the surface absorbs more and releases less. You don’t notice it during the first week, but that’s the reason TPE products in this category generally should be regarded as consumables rather than long-lasting purchases.

There is a practical consequence to that. TPE is softer and more stretchable than silicone, and that’s the point here: a sleeve with a 3-centimeter inner diameter must be able to stretch properly to work for different users. Adults explicitly lists elasticity as stretchable and the inner diameter as stretchy. The manufacturer describes the material as tear-resistant and elastic with a snug fit. So the softness is a function, not a shortcut — but it comes with the disadvantage of cleaning as part of the deal.

Phthalates and the missing material declaration

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

Here there is a clear gap in the documentation, and it should be stated plainly. The manufacturer does not publish a phthalate-free or latex-free declaration for the Dual Purpose Sleeve models. The description says that the TPE is high quality, durable, and non-toxic, but it’s a general wording, not a material declaration. There is no information about which plasticizers are included, and there is no reference to any standard or any test certificate.

That it’s a real gap and not just a sloppy product page is shown by the fact that Lovetoy does something different on another model in the same family. On the product page for the older Vibrating Wave Knights Ring, it explicitly says "Waterproof, Latex free, Phthalate free". Same manufacturer, same brand line, same material group — but only one of the models gets a printed declaration. It’s a reasonable reason to ask the store before buying if the material declaration is crucial for you.

In the picture, it’s clear that one of the stores makes a material commitment that the manufacturer doesn’t. The store writes "skin-friendly TPE" in its feature table. It’s a store phrasing, not an assertion from the manufacturer, and it should be read as exactly that. When a store claim and the manufacturer’s claim differ, the manufacturer’s applies — and here the manufacturer says nothing at all about being skin-friendly.

Dimensions and weight: 13.5 cm, 195 grams, and 6.5 centimeters across the widest

The manufacturer states the product size as 13.5 centimeters in length and Φ3 centimeters, meaning the inner channel’s diameter. The same thing is also expressed in inches in the manufacturer’s point list: 5.3 inches total length, 1.2 inches inner diameter, and 2.56 inches outer diameter. The information therefore matches across the sources, which is more than you can say about many products in this price range.

The manufacturer’s dimension sketch in the product gallery adds four figures that none of the store text descriptions report: the width at the base is 5.5 centimeters, the opening’s diameter is 1.6 centimeters, and the removable vibrator measures 5.6 × 2.5 centimeters. The difference between the largest outer diameter of 6.5 centimeters and the base width of 5.5 centimeters describes the shape—the sleeve is widest a bit up and tapers toward the opening.

According to the manufacturer, the weight is 195 grams, measured on the product. Packed, the unit weighs 223 grams, and the package measures 7.5 × 7.5 × 16 centimeters. Having both product weight and package weight published separately is unusual in this category and makes the numbers useful: the 28-gram difference is the cardboard and the user manual included, not an ambiguity in the measurement.

What does 195 grams mean in your hand? It’s about the weight of a full mini soda can, and it’s clearly more than the older Vibrating Wave Knights Ring, which is listed as weighing 65 grams. The weight is because it’s solid TPE material in a sleeve that is 13.5 centimeters long and 6.5 centimeters thick at the widest point. What you can tell for sure is that it’s not a product you forget you have in your hand, and that when it’s for collecting/displaying it hangs in place with its own weight rather than sitting held in tension.

How it’s used: one button, one setting

The interface is as simple as it can be. The manufacturer’s product information states under the line Setting a single value: Single Speed. That means there is one speed, and it’s switched on and off. The manufacturer’s own functional image shows the button at the end of the removable mini vibrator and calls it the Power button.

It’s worth comparing how the product is marketed across stores. One store writes "Starka vibrationer" in its point list, and another writes "Kraftfulla vibrationer" in its. None of them specifies a number of settings, and that’s correct—but the wording easily makes you think of a product with multiple programs. There is one setting. Anyone who wants to be able to adjust the intensity should choose another product.

The consequence of having only one speed is that there’s effectively no learning curve. There’s nothing to work through, no memory function to understand, and nothing to learn in the dark. For a product that’s meant to be used together with someone else, it’s a real advantage: no one needs to search for the right button in the middle of something.

Bullet vibrator: 5.6 × 2.5 centimeters and a single speed

The vibration does not come from the sleeve but from a separate mini vibrator that sits in a compartment in the TPE housing. The manufacturer’s dimension sketch shows that it has dimensions of 5.6 × 2.5 centimeters, and the manufacturer’s cross-sectional view shows that it sits in the lower part of the sleeve, at the base, with the button facing outward.

The placement has a direct practical consequence. When the sleeve is used as a penis sleeve, the vibrator ends up closest to the base, i.e. toward the partner during intercourse—this is the geometry the manufacturer’s own illustration shows. When the sleeve is instead used as a masturbator, the vibration is in the end you hold in your hand. The same component therefore does two different things depending on how the product is used, which is a logical consequence of it only having one placement position to sit in.

That the vibrator is removable is, in itself, the most important design detail of the entire product, for two reasons. First, it has to be removable so the battery can be accessed. Second, it has to be removed before the sleeve is cleaned, because the manufacturer states that the mini vibrator is not waterproof. Without the removable design, the product would not have been possible to rinse at all.

What "+55 % circumference" actually means

The manufacturer promises an increase in circumference of at least 55 percent, and the figure appears both in the product text, in the bullet list, and as a printed icon on the packaging. Note the difference in wording: the manufacturer writes “at least,” while other product descriptions write “up to.” These are two opposite claims about the same number, and they should be read as meaning that neither of them is a measurement.

What can be calculated is the geometry. The manufacturer states that the inner channel is 3 centimeters in diameter and the outer one is 6.5 centimeters at the widest point. The circumference of a circle is the diameter times pi, i.e. about 9.4 centimeters internally and about 20.4 centimeters externally across the widest section. So how large the perceived increase will be depends entirely on how much material the user stretches out—the more the sleeve is stretched, the thinner the wall becomes, and the smaller the added increase. Fifty-five percent is therefore a figure that applies to a specific starting circumference, and the manufacturer does not state which one.

What is, however, uncontroversial is that the sleeve does something to both length and circumference: the total length is 13.5 centimeters and the top is closed, which means that the person using it gets an extension in addition to the circumference increase. How much that is again depends on the starting point, and the manufacturer does not publish a figure for how long the closed top section is.

Fit: a 3-centimeter channel and a 1.6-centimeter opening

The fit is the single most common reason for disappointment with a penis sleeve, and the figures here deserve to be read carefully before buying. According to the manufacturer’s dimensional sketch, the opening is 1.6 centimeters in diameter. The internal channel then widens to 3 centimeters. The material is stretchable—both the manufacturer and the shop’s product data state it explicitly—but 1.6 centimeters is a narrow opening to get inside through.

That means, in practice, that the product requires lubricant in order to be slid on comfortably. Both shop listings state that it is compatible with water-based lubricant, and that it is the only type of lubricant that is suitable here—more about why further down.

It also means that someone whose circumference is far above average should expect the sleeve to feel tight, and that someone whose circumference is far below average may find it sits loose because it is held in place by friction and not by any ring. The manufacturer does not publish a recommended size range, which is a shortcoming for a product whose entire function is based on fit.

Water resistance: the manufacturer explicitly says no

This is the most important point of this overview, and it goes against how the product is marketed. The manufacturer writes it plainly in its own product information, both on the B2B side and in its consumer store: the mini vibrator is not waterproof and should not be submerged in water.

None of the shop listings provides that information. Two shop listings both write “easy to clean” in their bullet lists without any reservation. A quick fact table for other products includes a line for water resistance—for example, it’s filled in for You2Toys Super Dick—but that line is completely missing on this product page. It’s not wrong to omit it, but that means a buyer who skims the table never gets to know that there is a limitation. In this market, no shop in our data sells the product.

There is also no IP rating published. The manufacturer states neither an IPX rating nor any other formal enclosure rating for the product. If no rating is provided, the product should be treated as not waterproof, and here there is also an explicit warning from the manufacturer against relying on that. The fact that the older Vibrating Wave Knights Ring from the same manufacturer is labeled “Waterproof” makes the contrast clear: Lovetoy states water resistance when it’s available, and it is not stated here.

Cleaning, lubricant, and storage

The cleaning therefore needs to be done in two steps. First, take the mini vibrator out of its compartment and wipe it off by hand—it must not be rinsed. Then rinse the TPE sleeve itself in lukewarm water with fragrance-free soap or a cleaning agent intended for intimate products, and be sure to pay attention to the inner channel where the bumps and ribs sit, since that’s where residue gets stuck. Let the sleeve dry completely before putting the vibrator back in place.

TPE is not pore-free in the same way that silicone is, which makes drying more important than it is for a silicone product. A sleeve that’s stored away damp with a textured interior is a worse starting point than a smooth silicone surface, and this is the single most important care routine to keep the material lasting.

Lubricant should be water-based. Two shops explicitly state compatibility with water-based lubricant, and it is also the only type that doesn’t risk attacking the material. Silicone-based lubricants should be avoided on soft elastomers, and oil-based products like coconut oil leave a film that’s difficult to remove from a textured channel. A water-based lubricant needs to be topped up more often, but that’s the trade-off that applies to all soft materials in this category.

Store the sleeve dry, for your sake. Soft TPE products that sit against other soft plastics can, over time, develop changes to the surface, and a texture that has become tacky can’t be saved. A fabric bag—which is not included in the delivery here—is a cheap investment that extends the service life of a product in this material class.

What does the Lovetoy Knights Ring Dual Purpose Sleeve sound like?

The answer has to be short and honest. The manufacturer does not publish a measured decibel value for this product, either on the product page or in its consumer store, and none of the three stores lists any number either. There is no value in reporting it, and a number that shows up elsewhere without an indicated measurement method is worth no more than the guess behind it. In this market, no shop in our data sells the product.

What can, however, be established constructively is that the sound comes from a small button-cell-powered motor in a 5.6-centimeter-long bullet, and that it’s embedded in a massive 195-gram TPE body. Soft material around a motor dampens. That says something about the order of magnitude, but it doesn’t replace a measurement, and that measurement has not been published.

Battery: a CR2032 that is included

The manufacturer specifies the power supply under the row Charging: 1 × CR2032 button cell, and that the cell is included in the package. The store lists the same in its specification table, with charge type CR2032 and the number of batteries 1. The information matches between the manufacturer and the store, which is worth noting since it isn’t always the case in this category.

CR2032 is one of the most common button cells available, and the most important practical consequence is that you can buy it in any grocery store. That’s a real advantage compared with products powered by multiple small cells of less common types, and it’s also an advantage compared with rechargeable products with a proprietary magnetic charging cable—there’s no cable to lose.

Can the battery be replaced?

The construction supports this: the vibrator is a separate, removable unit, and a CR2032 by definition is a replaceable cell rather than a built-in rechargeable battery. But here the line between what can be established and what is assumed must be drawn clearly. The manufacturer publishes no instructions for battery replacement and does not explicitly state that the cell is replaceable, and none of the shops does either. What it says is that a cell is included.

If the vibrator turns out to be sealed, the product’s service life is tied to a single button cell, and in that case it is the strongest argument against it. If the cell is replaceable, the relationship is the opposite: a five-krona cell keeps the product going for years. That’s a decisive difference, and it can’t be determined from the manufacturer’s published documentation.

Operating time that isn’t published

The manufacturer does not publish operating time for Knights Ring Dual Purpose Sleeve. There is no information on how many minutes or hours a CR2032 lasts in this vibrator, no information on the cell’s capacity in milliampere-hours beyond what the CR2032 format itself implies, and no information on power consumption. The stores don’t provide any such information either.

This means you can’t plan your use based on a number, and comparisons with rechargeable products become difficult. A rechargeable competitor that states, for example, a 60-minute operating time gives you a figure to count on; here you get a cell that’s cheap to replace, but whose service life isn’t stated. Which is best depends on how you use the product — but one is measurable and the other isn’t.

A general piece of advice that applies to all button-cell powered products: remove the cell if the product will be left unused for a long time. Button cells can leak, and a leaking cell in a compartment that sits inside soft TPE is harder to clean after than a leaking cell in a plastic casing.

Lovetoy Knights Ring compared with the alternatives

Three comparisons are relevant: versus the sister model with a different texture, versus the older and smaller Knights Ring ring from the same manufacturer, and versus a penis sleeve from another brand in the same price range. All the specifications below come from the respective manufacturer’s own information where such information exists, and the prices come from the stores’ product feeds on 29 July 2026.

Against Knights Ring Dual Purpose Sleeve Spiral — same product, different surface

Spiral has item number LV314111 and EAN 6942063402428. The manufacturer’s specifications are practically identical to Wavy: 13.5 centimeters total length, Φ3 centimeters internal, TPE, white color, a single vibration mode, 1 × CR2032 included, the same packaging dimensions, and the same guarantee of at least a 55 percent circumference increase. Product weight is listed as 194 grams versus Wavy’s 195 grams.

A one-gram difference is within the error margin for how a manufacturer rounds, and there is no other published difference besides the pattern on the outside. In this market, no shop in our data sells it.

The conclusion is simple—and a little unusual in a comparison: the choice between Wavy and Spiral has no technical basis. Choose the surface you prefer. Anyone looking for a functional reason to pay for one over the other won’t find any in the manufacturer’s information.

Compared to Lovetoy Vibrating Wave Knights Ring — 65 grams versus 195

The older Vibrating Wave Knights Ring in white has EAN 6970260907453 and is an entirely different design despite the closely related name. It is 10 centimeters long versus Wavy’s 13.5, has Φ3.7 centimeters versus Φ3, and weighs 65 grams versus 195. So it’s shorter, wider, and three times lighter, and it is open at both ends—it’s a ring to slide over the shaft, not a closed sleeve.

Three differences worth highlighting from the manufacturer’s own information are as follows. First: the increase in circumference is stated as 45 percent versus Dual Purpose Sleeves 55 percent. Second: the older model is expressly labeled waterproof, latex-free, and phthalate-free, which Dual Purpose Sleeve is not. Third: the older model can’t be used as a masturbator, because it lacks a closed tip and a textured inner channel of the same kind.

This is an interesting comparison precisely because the newer and more expensive product is the one that lacks a materials declaration and waterproofing. If it’s most important for you to be able to rinse off the product without reservation and to have a printed phthalate-free declaration, then the older ring model is the better choice despite the fact that it makes less of an increase. If you want the dual function and the larger increase in circumference, then Dual Purpose Sleeve is the right product—but then you also accept a vibrator that must not get wet.

Compared to You2Toys Super Dick — 16 centimeters without vibration

You2Toys Super Dick penis sleeve is a pure penis sleeve without vibration. The store lists the total length as 16 centimeters and the inner diameter as 2 centimeters, and the quick-facts table lists it as stretchable, soft, textured, equipped with a penis ring, waterproof, and "Body-safe & Free from Phthalates". The item number is 0523038.

The differences that matter: Super Dick is 2.5 centimeters longer but has a narrower inner diameter—2 centimeters versus Lovetoy’s 3. It has no vibration at all, and therefore no battery to keep track of and no electronics that limit cleaning—the store lists it as waterproof. It can, however, not be used as a masturbator, because the entire construction is based on being pulled on like a sleeve around the shaft.

If the circumference and the fit are the main thing, and you want to be able to rinse off the product without any conditions, Super Dick speaks very strongly in its favor—and it’s also cheaper at the same store. If it’s the vibration and the dual function that’s what draws you in, the Lovetoy sleeve is the only one of the two that provides that. Note at the same time that the material declaration “Free from phthalates” for Super Dick is a store statement, not a claim that we’ve been able to verify in You2Toys’ own documentation.

No shop in our data sells it in this market.

No shop in our data sells the item with EAN 6942063402442.

The inventory situation is unusually straightforward this time: the price check was carried out on July 29, 2026. That makes it easier to interpret which option is the cheapest, unlike many products where the lowest price comes from a store that is sold out.

A price claim deserves a remark. The store lists a price and at the same time states that the lowest price during the past 30 days has also been that same amount, meaning the price has been unchanged. In other words, there’s no temporary promotion that explains the difference versus the two cheaper stores—it’s about the regular margin setting.

Factor in the shipping cost before you choose. In this price range, one product is far below all stores’ thresholds for free shipping, so the shipping could easily be more than the difference between the most expensive and the cheapest store. The store states free shipping from a minimum order amount. If you only buy this one product, it’s the final price at checkout—not the price row in the table—that determines where it ends up being cheapest.

The prices in the table above are updated when the stores’ product feeds are updated, but always check the final price at checkout. The sister models Spiral and Drip cost exactly the same on both sites, so there’s nothing to save by choosing a different texture.

Who is the Lovetoy Knights Ring Dual Purpose Sleeve for—and who isn’t it for?

It’s for you if you want to try both a circumference-increasing sleeve and a simple masturbator without buying two products, and you’re okay with the fact that neither of the functions is fully built out. It’s for you if you want something that works right away without needing to be charged, and you prefer a button cell you can buy at the grocery store over a charging cable that you have to find in a box. It’s for you if you want a single button and nothing to learn.

It doesn’t suit you if you want to be able to adjust the vibration—there’s only one mode. It doesn’t suit you if you want to be able to put the entire product in water, because the manufacturer explicitly states that the mini vibrator isn’t waterproof. It doesn’t suit you if you require an issued phthalate-free or latex-free declaration, because the manufacturer doesn’t publish any for this model. And it doesn’t suit you if you want silicone instead of TPE, with the cleaning advantage that comes with porous material.

One last thing belongs in the decision. This is a budget option, with 195 grams of TPE, a button cell, and a single speed. It’s reasonably priced for what it is, and your expectations should be calibrated accordingly: a TPE product with texture on the inside is, in practice, a consumable. Expect to replace it when the material starts to feel different, and don’t let the price tag fool you into thinking you’ll save on cleaning—it’s the only care effort that actually affects how long it lasts.

Warranty, complaints and the right of withdrawal

Lovetoy publishes no manufacturer warranty for Knights Ring Dual Purpose Sleeve—neither on the product page, in the brand section, nor in its own web shop is any warranty period stated for this item. That differs from brands like Satisfyer and Womanizer, which state 15 and 5 years respectively, and it’s a real difference between the price tiers in this category.

The lack of a manufacturer warranty, however, doesn’t necessarily mean you’re left without protection. In the EU and EEA, the seller is liable for defects that existed at delivery and appear within at least 2 years (the legal guarantee). This applies to original defects—such as the vibrator not working from the start, the TPE casing having a crack, or the wrong item being delivered—and the seller is your counterparty.

For distance purchases, consumers in the EU and EEA generally have a 14-day right of withdrawal, starting when the goods are received. Be aware that for sealed goods that are not suitable for return for health or hygiene reasons, this right is exempt once unsealed—and in this case the product is sold in a cardboard box with a hanging attachment, meaning it’s exactly the type of packaging where breaking the seal is easy to determine. The right to complain for defects, however, always applies, regardless of whether the package has been opened.

If you have questions about what applies in your case, keep the receipt and the packaging until you know that the product works—the seller is liable for defects that exist at delivery and appear within at least 2 years, and it goes faster with item number 6942063402442 at hand.