9 Best Hollow Strap Ons [Test & Reviews]

   Isabelle Uren
If you’re looking to buy a hollow strap on, there are lots of important variables to take into consideration before making your purchase. To keep the process simple for you, I’ve reviewed the best hollow strap ons available on the market today, and put them together in this fun strap on review!
1 Test Winner

Doc Johnson Hollow Strap-On Set

 Doc Johnson Hollow Strap-On Set

  • want an affordable product with good quality materials
  • want a non-realistic hollow strap-on

Doc Johnson Hollow Strap-On Set

  • are extremely large, down there
  • prefer something slightly textured

Now you can have a shaft that’s ready to go whenever and can really go all night! Both the hollow non-phallic dildo and the harness of this strap-on set from Doc Johnson are made of smooth, luxurious silicone that will feel fantastic for both you and your partner, especially as it warms up during the heat of the action. The seven-inch dildo slips over your penis, and the bulbed end enhances the stimulation, allowing you to pleasure your partner for as long as you want. Although the hollow shaft is designed to accommodate a penis, this toy can be worn by anyone, and the shaft is stiff enough to use vaginally and anally.

  • Silicone shaft and harness
  • Waterproof
  • Bulbed head
  • Comfortable

  • Can be tricky to use at first
  • Might not fit larger penises
Doc Johnson Hollow Strap-On Set
Length7 inches
Diameter1.67 inches
Width(canal) 1.6 inches
MaterialsSilicone

This high-quality hollow strap-on is our test winner of this round-up review because it scores highly on form, functionality, and of course, fun! The harness and strap-on are extremely comfortable for the wearer and still provide a good level of stimulation. The receiver also gets a great level of stimulation from the soft but firm shaft and sculpted head. The price is fantastic for a hollow silicone strap-on with so many different uses. The dildo can be worn by a wearer with a penis or vagina, can be used for vaginal or anal penetration, and can even be used for some wet and wild fun in the shower!

2 Runner Up

Doc Johnson Hollow Strap-On 4-piece Kit

 Doc Johnson 4-Piece Strap-On

  • have not tried sticking your penis inside a hollow dildo or strap-on
  • want multiple different sizes and options

Doc Johnson 4-Piece Strap-On

  • don't want to overpay for quality and ease of use

The goldilocks of hollow strap-ons! Everyone can find something ‘just right’ in this strap-on set that contains a whopping three different silicone dildos. The three different size dildos are all made from soft but firm silicone and feature a bulbed tip to up the stimulation for your partner. The choice of sizes makes this hollow strap-on one that can be used in many different ways and can still keep things exciting over time. You still get to enjoy the sensation through the silicone shaft with the added bonus of being able to pleasure your partner for as long they desire!

  • Three changeable dildos
  • Silicone dildos and harness
  • Waterproof
  • Bulbed shafts

  • Hollow canal might not fit larger penises
  • Can be tricky to use at first
Doc Johnson 4-Piece Strap-On
Length7, 7.5, and 8 inches
Diameter1.9, 1.9, and 2.22 inches
Width(canal on all) 1.75 inches
MaterialsSilicone

This comprehensive kit has pretty much everything you need to explore different types of strap-on fun. You really are spoilt for choice! The hollow strap-on can be worn over a penis, allowing you to explore new record-length sessions or add some extra size. Alternatively, it can be worn by someone with a vagina, and the shafts are rigid enough for anal penetration, making this a perfect set for pegging, especially with the smaller-sized dildo. Having three different sizes also means you can keep experimenting and moving onto the next size as you get more comfortable with the set. The price is great for such a versatile and well-made toy that brings endless opportunities to spice up sex with your partner!

3 Best for Beginners

Lovehoney Perfect Partner Vibrating Strap-On

 Lovehoney Perfect Partner Vibrating Strap-On

  • love internal vibrations during penetration
  • enjoy vibrations around your shaft
  • want the vibrations to be optional
  • Are new to strap ons
  • Looking for something simple to use with a partner
  • Want a comfortable harness

Lovehoney Perfect Partner Vibrating Strap-On

  • don't want PVC in your products
  • want a wireless vibrating feature
  • Want a strap on that's 100% body safe
  • Prefer toys with some flexibility
  • Are used to high quality toys

This vibrating hollow strap-on is designed so that it can be worn by anyone. Wearers with a penis can slip inside the hollow cavern and enjoy the delicious vibrations that pulse through the shaft. The partner being penetrated gets the pleasure of the vibrations as well as the intense full feeling from the thick, long, textured shaft! The three speeds and 7 patterns of vibration can be switched up using the wired remote, which can be used by either partner or slipped into the waistband when not in use.

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  • Vibrating
  • 3 colours available
  • Remote controlled
  • Long, thick shaft

  • Inner canal too small for larger penises
  • Harness doesn't fit larger sizes
  • PVC is porous
  • Battery powered
Lovehoney Perfect Partner Vibrating Strap-On
Length6.5 inches
Insertable length6 inches
Diameter1.5 inches
WaterproofSubmersible
MaterialsPVC
Storage Bag IncludedNo
FlexibilityFirm
Colors AvailablePurple, Flesh Pink, Black

The best thing about this hollow strap on is that it is unisex! It can be worn over a vagina or the hollow canal can accommodate a penis and both partners get to enjoy the vibrations. While the canal is designed to fit most penises, if you have a larger-sized penis (more than 6 inches long and 1.5 inches wide when erect), the canal will be too small for you. The shaft is large, so perfect for vaginal penetration or people who enjoy larger anal toys. This is a very reasonably priced vibrating strap-on, but the shaft is made of PVC which cannot be completely cleaned as it is porous and it is battery powered. This would be a good option to try this type of toy for the first time.

4 Cheapest

Lovehoney Perfect Partner Unisex Hollow Strap-On 6 Inch

 Lovehoney Perfect Partner Unisex

  • want a super cheap hollow strap-on
  • enjoy a realistic design
  • need an adjustable harness

Lovehoney Perfect Partner Unisex

  • want high quality materials

A realistic strap-on that can go for an unreal amount of time! This hollow strap-on from Lovehoney is sure to fulfill you and your partner’s fantasy for some all-night fun! The comfortable elasticated harness fits most sizes and the thick elastic straps make it comfortable to wear even for long sessions. Your partner will love the smooth shaft with realistic details, such as raised veins and a sculpted head that add stimulation with each movement you make.

  • Realistic details
  • Waterproof
  • Comfortable harness
  • Great size

  • PVC is porous
  • Can have a plastic smell
  • Can be too hard for some
  • Won't fit larger penises
Lovehoney Perfect Partner Unisex
Length6.5 inches
LengthInternal: 4 inches
Insertable length6 inches
Diameter1.9 inches
Diameter (internal)1.75 inches
MaterialsPVC
WaterproofSubmersible

This realistic hollow strap-on has a great size and feel and can allow you and your partner to experience longer-lasting sex. The textural details add a layer of stimulation, and the design is great if you want to keep it lifelike. Although this is a unisex toy, the hollow shaft can bend when worn by someone without a penis, so this strap-on is best when worn over a penis. If you are looking for a strap-on for wearers with a vagina, it’s better to go for a more hollow solid strap-on or non-hollow strap-on. You can use this hollow strap-on for vaginal and anal penetration, and you can use it in the shower for some extra steamy, slippery strap-on sex. The low price makes this a great option if you want to try out a hollow strap-on without investing in a pricier option. However, being made of PVC, a porous material, this strap-on cannot be fully sterilized and should be used with a condom for penetrative use. This also means it can have a plastic smell, especially when it’s new.

5 Best Ejaculating

Fetish Fantasy Ejaculating Strap-On

  Fetish Fantasy Ejaculating Strap-On

  • have erectile dysfunction and want the feeling of cumming again
  • love the realistic look

Fetish Fantasy Ejaculating Strap-On

  • feel that it would be to large

This is about as real as it gets! Not only does this hollow strap-on feature lifelike balls and textural details, it even ejaculates at your command! 7.5 inches long and with veined details, this impressive shaft slips over your penis and allows you to go all day and night if you want to. Pair this ejaculating hollow strap on with some special cum style lube for some explosive loving! Fully waterproof and featuring a comfortable, stable harness you will get plenty of fun out of this strap-on set.

  • Ejaculating
  • Realistic balls
  • Textural details
  • Comfortable harness

  • PVC is porous
  • Canal is too small for larger penises
Fetish Fantasy Ejaculating Strap-On
Length7.5 inches
Diameter1.98 inches
Width(canal) 1.75 inches
MaterialsPVC

There’s no doubt that this realistic, ejaculating hollow dildo can lead to some pretty intense orgasms, and it’s way less fiddly than other options. All it takes is an intuitive squeeze to set of the spunk that adds an extra to Oh to your partner’s orgasm, especially when you time it just right. As the wearer, whether you have a penis or not, the lifelike shaft and ability to ejaculate keep things as real as they can get, and the ability to ejaculate (wherever you choose to do it) add a whole new level to the experience. This is a reasonable price for a hollow strap-on with this level of functionality, but the toy is made from PVC which is porous and cannot be fully sterilized.

6 Large

Fetish Fantasy Unisex Extreme Strap-On

 Fetish Fantasy Extreme Strap-On

  • enjoy extreme fulfillment
  • have a larger penis
  • like heavier hollow strap-ons

Fetish Fantasy Extreme Strap-On

  • are a complete beginner to large dildos

This big boy hollow strap-on means business. The hefty 8-inch long dildo with a might 7-inch girth will leave you completely full and weak at the knees. It is designed to hit sweet spots you didn’t even know existed, resulting in some immense orgasmic power. Easy to use, you simply step into the lightly padded harness and slip the shaft over your penis (if you are a penis owner), and you are good to go for some mammoth sessions that will leave you and your partner happily exhausted. The added texture from the raised veins creates tantalizing sensations with each move, and your partner will love the added stamina! This hollow strap-on is waterproof and features a fully adjustable harness in sleek black faux leather for a more luxurious look and feel

  • Extra large dildo
  • Realistic details
  • Padded harness
  • Waterproof

  • Made from porous soft plastic
  • Limited positions due to the downward curve
  • Canal is quite rigid
  • Strap position can be awkward
Fetish Fantasy Extreme Strap-On
Length8 inches
Diameter2.22 inches
Width(canal) 1.25 inches
MaterialsSoft plastic

So as you can guess, this is an advanced toy and is best for the size kings and queens out there looking for something big and bold. To get the best experience, make sure to use plenty of lube and warm up properly to make sure you are fully aroused. While the size and texture really do lead to some intense sensations, the downwards curve of the shaft limits the number of positions that you enjoy with strap-on. The faux leather straps have a more luxurious feel than the usual elastic waistbands. If the wearer has a penis, the crotch strap sits to one side of the testicles, which can feel a little awkward. While the price is pretty good for such a sizeable toy complete with a good harness, the materials used in the dildo aren’t the best. Being made from soft plastic means that this toy is porous and can’t be fully cleaned, making it less safe than a silicone option.

7 Penis Extender

Vixen VixSkin Colossus

 Vixen VixSkin Colossus

  • don't mind about the price
  • want to feel a realistic sensation
  • want to give to your partner more pleasure

Vixen VixSkin Colossus

  • are on a budget
  • don't need a penis extension

Vixen VixSkin Colossus Silicone Penis Extender 7 inch is our test winner of strap-on penis extension. This magical product was designed to target the G-spot or P-spot, it has pronounced veins and head which means it offers a realistic-feeling penetration. It’s inner canal is textured to provide the wearer some pleasure too. It is compatible with only water-based lube and you can wash it in warm water or if you want to sterilize it, you can do it for 3 minutes. Three different colors, choose the one you like. This amazing strap-on penis extension has a stretchy ring that you can put around balls for great stability and it’s core is firm enough to help you out with a great erection.

  • Realistic feel
  • Texture
  • Size
  • Easy to clean

  • Can be a bit tight around the testicles
  • Expensive
Vixen VixSkin Colossus
Length9 inches
Width2.06 inches
Insertable length(Inner Canal) 5.5 inches
Diameter (internal)(Inner Canal) 1.4 inches
MaterialsSilicone
FlexibilityVery flexible except for the head
Storage Bag IncludedNo
Colors AvailableChocolate, Caramel, Vanilla, and Turquoise

If you don’t mind about the price and you want a really good strap-on penis extension, then you can choose the Vixen VixSkin Colossus Silicone Penis Extender 7 Inch. You can travel to the next level of pleasure with your couple and give he/she a lot of amazing sensations. You can choose the color and enjoy the curve design to stimulate his P-spot or her G-spot. Use your creativity and don’t forget to wash and clean very well this strap-on penis extension. Use water-based lubricant before.

8 Thick

Lebrawn 9 inch XL

 Lebrawn 9 inch XL

  • want to give deep penetration experience
  • are on a budget
  • are looking to give more pleasure to your partner

Lebrawn 9 inch XL

  • don't like big sizes
  • are looking for another type of penis extension

LeBrawn 9 Inch XL Realistic Black Cock Penis Extension Sleeve by Sexflesh gives to you enormous amounts of pleasure. It is an interesting strap-on penis, the length size is so huge and you can offer your couple the opportunity to experience different sensations during penetration. It is totally flexible and soft, which means that using it is really comfortable. Only available in black color. Enjoy this incredible strap-on penis wherever you want, it is totally waterproof.

  • Big size length
  • Soft and realistic
  • Fit nice

  • The initial smell
  • It is not a vibrator
Lebrawn 9 inch XL
Length9 inches
Width2.25 inches
Insertable length6.5 inches
Diameter (internal)1.2 inches
MaterialsTPE and Silicone

If you are looking for a unique BBC experience and don’t have the tools to do so, you really need to try this strap-on penis extension. Is about LeBrawn 9 Inch XL Realistic Black Cock Penis Extension Sleeve by Sexflesh… Are you interesting? First, is a cheap option, you can buy it for a good price and good quality. It is made of flexible TPE and Silicone, which means that it offers you a realistic sensation and soft texture, it gives to you a nice comfort. The length size is really good to give your partner incredible sensations and both enjoy the pleasure you have never experienced. You can use water-based lube with this amazing strap-on penis extension.

9

King Cock 10 Inch Hollow Strap On Penis Extension With Suspender Harness

 King Cock 10 Inch Hollow Strap On

  • really enjoy a a large hollow strap-on
  • want a harness with more stability

King Cock 10 Inch Hollow Strap On

  • prefer something smaller
  • don't like a realistic texture

The King Cock 10 Inch Hollow Strap On is a great device for transforming your dong into an impressive 10 inch monstrosity! With an extremely realistic design with stimulating textures in the shape of bulging veins and a pronounced head and lifelike balls, this is great for anyone with ED who wants to indulge in the look and feel of some large, lifelike arousal. The suspender-style harness will provide you with extra stability during powerful thrusts. It is also easy to use and fully adjustable!

  • Suspender harness for extra stability
  • Large strap-on for intense penetration
  • Fully adjustable harness

  • Made from porous PVC
King Cock 10 Inch Hollow Strap On
Length10 inches
LengthInner length: 8 inches
Diameter1.9 inches
Diameter (internal)1.5 inches
MaterialsPVC, vinyl, metal
WaterproofSplashproof
FasteningVelcro
AdjustableYes
Harness SizeFits most sizes (adjustable) inches

This big guy is best suited for anyone who wants to try having this much length and girth to penetrate their partner with. If your partner loves being strethed out and fille up and is longing for some super-sized pounding, then you can make their dreams come true with the King Cock! Keep in mind that the penis sleeve itself is made of porous PVC, so it is not suitable to use internally without a condom, as dirt and bacteria can get trapped in microscopic holes in the surface of the shaft over time.

How to Choose the Right Size Hollow Strap-On?

There are things to consider size-wise when you are choosing your new hollow strap-on. Firstly, that the hollow canal fits over your penis, if you have one, and secondly, that the dildo is a good size for your partner.

Internal canal size

Internal canal size - How to Choose the Right Size Hollow Strap-On?
As the internal canal should slip comfortably over your penis, it’s important to make sure there you can fit inside it. After all, a cramped cock won’t be comfortable for very long! Firstly, you need the diameter of your erect penis. You can do this by measuring around your erect penis at the widest part to get the circumference. Then, you can divide the circumference by 3.14 (pi or π), and this will give you the diameter.

Dildo size

The second consideration involves choosing a suitable size dildo for your partner. This will depend on several things, including, experience with dildos, general size preferences, and whether the dildo will be used for vaginal or anal penetration. This handy video from a sex toy educator goes into more detail about how to get it just right!

Types of Hollow Strap On

There are a few different types of hollow strap-ons. You’ll want to compare the available options before making a decision. Here are the options on the menu!
  • Interchangeable dildos – If you want to use multiple dildos with your strap on then having an interchangeable model is key! These allow you to switch out the dildo for your strap-on, opening up a world of options in the bedroom.
  • Vibrating – As the name implies, these strap-ons add vibrations into the mix for surreal sensations!
  • Double Penetration – Depending on the toy in question, these DP strap-ons may utilize the wearer’s penis or two dildos to achieve the desired results. Either way, double penetration means twice the fun.

Hollow Strap Ons VS Penis Sleeves/Extenders

Although they serve a similar function, there actually is a difference between hollow strap-ons and penis sleeves/extenders!
  • Hollow strap-ons are devices that are hollow inside, allowing you to fit your erect, semi-erect, or even flaccid penis inside, and they are held in place by a harness. These can be especially useful for men who suffer from erectile dysfunction (ED), as you can still enjoy penetrative sex without a rock-hard erection. Of course, they can also be enjoyed by women as well!
  • Penis sleeves/extenders, while similar, are designed to fit snug over an erect penis. Wearing a penis sleeve will increase your girth and length, but isn’t very helpful if you can’t maintain an erection (or lack a penis).

Materials

Whether you’re shopping for a realistic hollow strap-on, a vibrating hollow strap-on, or just for strap-ons in general, you’ll quickly notice that there are a small variety of materials to choose from. Unfortunately, not every material is created equally, so you’ll want to stick to high-quality materials for the best experience. Rather than selecting a porous hollow jelly strap-on (which can harbor bacteria and can’t be sterilized), we recommend sticking to a non-porous material like silicone. Assuming they don’t contain any internal electronic elements, these materials can be fully sterilized for a safer sexual experience!

How to Use a Hollow Strap-On?

As hollow strap-ons are designed to be worn over a penis, these instructions detail how to do just that. But no problem if you are using a hollow strap-on without a penis, simply skip the second step!

Getting into your harness

Getting into your harness

The first step is getting into the harness. The two main styles are the thong, which has one crotch strap that goes between the legs, and the jockstrap, which has two straps that join to the waistband at the back. Start by getting into your harness and tightening the straps so the harness sits snugly against your body.

Fitting the canal over your penis

Fitting the canal over your penis

Next, you can lube up your penis and in the inner canal and slip the hollow strap-on over your penis. You will need to loosen one side of the harness to do this, so remember to tighten it again when you are securely in place. You might find that being in a semi-erect state makes it easy for you to enter the inner canal. This process can take some practice, so you might want to practice this solo beforehand.

You are ready to ride!

You are ready to ride!

EnThe last step is to apply plenty of lubrication to the outside of the dildo and then you are good to go! It’s a good idea to take things slow while you and your partner get used to the added size, especially as the wearer doesn’t get the usual level of tactile feedback.

How to Clean a Hollow Strap-on

Keeping your hollow strap-on sparkling clean is paramount! You need to make sure that it is cleaned thoroughly before and after each use. Always follow the manufacturer’s instructions for cleaning your sex toys. If your hollow strap-on has electrical components, you should extremely careful to keep them dry when cleaning your toy, unless the manufacturer specifically states that it is waterproof. It would be such a shame to ruin a buzz-tastic strap-on! The other very important thing to remember is that you must clean a hollow strap-on inside and out, making sure to clean out all of the semen if you have ejaculated inside the strap-on. Check out this helpful guide on how to clean different hollow strap-on materials.

FAQ

Hollow strap-ons are a great, non-invasive option if you have erectile dysfunction as they allow you to have sex with your partner even if you are unable to get or maintain an erection. As your penis sits inside the dildo, you can thrust naturally and enjoy the stimulation from the dildo over your penis, while you also please your partner.

The recommendation, as usual, is a water-based lube, in this way you shouldn't be worried about the compatibility with your toy because water-based lube is compatible with all sorts of toys. Besides it is very easy to clean and even though doesn't last as long as silicone-based does, it works pretty well!

This depends a lot on the material of the hollow strap-on, particularly the material of the inner canal. Some tend to be harder and others softer. The other thing is that although you will still feel sensations from the dildo over your penis, you won't get the same sensory feedback you would usually get from being inside your partner, which can make it difficult at first and can take some time to get used to.

Absolutely! A strap-on penis extension is totally safe as long as you use it correctly, remember it is not you who is using it but your partner as well. So bear in mind use plenty of lubricant on both sides, in and out. Also pay attention to your partner all the time, in this way everything would be totally safe and good!

The short answer is, don't! We love a good sex toy DIY but safety always comes first. As a hollow strap-on will be sitting over your penis and entering your partner, it's not worth taking any risks with getting it wrong. Stick to buying body-safe toys from reputable shops.

Well, since is a penis extension I would say men, but the truth is that it is not just for us. If you get a non-flexible hollow strap-on or a strap-on penis extension. Your partner could use it as well, of course, if you are into pegging or any sort of fun that includes a strap-on penis extension when you are not wearing it! But, don't lose your hope! If you are into pegging but you like soft and real-like strap-on penis extension, I have a solution for you, your partner can use a regular strap-on and wear on it the strap-on penis extension! sweet isn't it?

Yes! Hollow strap-ons are safe to use as long as you follow some simple rules: 1) Make sure the canal size isn't too small. You should not feel any pain when using a hollow strap-on. If you feel pain or the blood flow to your penis becomes restricted, remove the strap-on and look for a toy with a bigger canal size. 2) Make sure the dildo isn't too big for your partner. Again, this shouldn't be uncomfortable or cause any pain. 3) Take things slowly, both you and your partner need to get used to the added size. You also don't get the same tactile feedback as you would usually so communicating with your partner is key. 4) LUBE! Always use plenty of lubrication in the inner canal and outside of the dildo to make for a smooth ride!

Technically as long as you want and need. There is no real-time about how long you can wear it or use it. This will depend entirely on two things, first your partner and second your erection (unless you are using a hard version where erection is not that important). So my recommendation is that you start using it for short periods of time and start to experiment and wear it longer. In this way, you will learn what is your and your partner's time limit.

The best material in my opinion is silicone. But other materials are fine too, soft plastic is good as well. The point here is that you need to find the material that suits better for you. Silicone can be expensive while soft plastic can be a cheaper option. Any material can be good for you as long as you clean it properly and keep it in good shape!

What is a hollow strap-on?

Hollow strap-on dildos are usually worn in a harness and have a hollow canal, meaning they can be worn over a penis. They are unisex and can also be worn over a vagina, making them great for pegging and giving you more ways to play. Hollow strap-ons are popular with people who have erectile dysfunction, as they can be used with a flaccid or erect penis. They are also perfect for people who want to give their partner the pleasure of a bigger or longer-lasting erection. Hollow strap-ons fit snug to your penis and are held firmly in place using an adjustable harness. They are perfect for all types of penetrative play and come in a range of designs, so whether you prefer a realistic design or not, vibrations, or some added texture, there's something out there for you! A strap-on penis extension is a toy that can be worn on a penis. The main use is to provide extra girth and length to the user’s penis. However, men penis extension strap on toys offer more than simply increased size: they also increase stimulation for the partner, can help combat ED (depending on the design), and some models even offer vibrations! There are two types of these toys: strap-on toys and extension toys. The former can be used with or without an erection, whereas the latter requires an erection to fit properly.

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