10 Best Strap-On Dildos, Harnesses, and Sets for Everyone
Keep calm and strap-on.

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Hi, hello, and welcome to Strap-On 101. Your first lesson: Strap-ons are a fab way to explore anal play and power dynamics—and ofc, they're great sex toys for lesbians and partners who both have vulvas. But both vaginal strap-on sex and anal strap-on sex (aka pegging) can be a lil intimidating for the non-initiated, which is why we're here to help ya find the best strap-on dildos, harnesses, and sets. Hope you're ready to strap in and strap on—and first up, let's talk a liiiittle more about what strap-on sex entails, and why you should give it a shot.
As sexologist Carol Queen, PhD, previously told Cosmo, "Strap-on play can be wonderfully sexy, a mind-blowing role reversal, a source of sexual self-esteem, and prostate play!" But because there are SO many strap-on toys and accessories out there, it's hard to know what will work best for you. Btw, when we say "strap-on," we're pretty much always referring to the toy itself—usually a dildo—while the harness is the thing you wear to attach the toy to your body. Luckily, many sets include both the strap-on and harness, so you don't have to buy them separately (though you can if you've already got a toy or harness that gets the job done).
Our top picks for the best strap-on dildos, harnesses, and sets of 2024:
From strapless strap-ons to full strap-on harness kits, here are all the best strap-on accessories you can buy for your boudoir—and read on for everything you need to know about strap-on sex.
So...what is a strap-on?
Generally speaking, a strap-on refers to any toy (typically a dildo) that you can wear with a harness in order to penetrate a partner. That toy can be phallic or non-phallic, vibrating or non-vibrating, big or small—it all depends on what you're into! Likewise, you can buy strap-on sets that include both a toy and a harness, or you can mix and match by purchasing harness-compatible dildos or dildo harnesses separately. Oh, and there are even strapless strap-ons (sometimes known as double-sided dildos or double-ended dildos) that can be worn with or without a harness for more ~options.~
How to choose the best strap-on
If you're totally new to strap-on sex, it's probs best to get a strap-on kit (ideally with a few different-sized dildos and O-rings!) so you have all the tools needed to get started. But whether you're shopping for a kit, a dildo, a harness, or a strapless strap-on, here are some things to keep in mind:
Consider the strap-on size
Just like with any insertable toy (looking at you, butt plugs), you don't wanna choose a dildo that's too long or girthy for you to use comfortably. As certified sex therapist Dulcinea Pitagora, PhD, LCSW, CST, previously told Cosmo, it's better to start small and then work your way up, 'cause no one wants to experience anal or vaginal tearing from a too-big toy. "You can get more pleasure from larger sizes when you're more aroused," they explained. Side note: If you're using a larger dildo that's over two inches in girth, you should probs opt for a sturdier harness. Speaking of which...
Choose the right harness
A jockstrap or jock-style harness is the most popular option for strap-ons, as most can be fully adjustable for a custom fit. However! Underwear-style harnesses (such as brief or boxer harnesses) are often softer and much more comfortable to wear, though they may not be able to handle larger toys with as much control as a traditional harness. Think about the dildo you'll be using and how you like to play before making your choice—or try both and see what you prefer!
Check out the O-ring
No matter what style you buy, every strap-on harness comes equipped with an O-ring, which is used to keep the toy or dildo in place. Some harnesses have elastic O-rings that can stretch to accommodate a variety of dildos, while others include multiple O-rings of different sizes that you can swap in and out. If you go the route of choosing your dildo and harness separately, be sure to check the size of the harness ring to make sure it's a good fit for your toy.
Meet the experts
- Carol Queen, PhD, is the staff sexologist for Good Vibes, as well as the author of The Sex & Pleasure Book: Good Vibrations Guide to Great Sex for Everyone.
- Dulcinea Pitagora, PhD, LCSW, CST, is a psychotherapist, sex therapist, and BDSM expert known as the Kink Doctor, and they're also the founder of Manhattan Alternative.
Why trust Cosmo?
Here at Cosmo, we know pleasure is highly diverse, which is why we rounded up a whole range of highly-rated strap-ons, from strap-on kits for beginners to seriously powerful strap-on dildos that'll leave your legs quaking.
We also have v high standards when it comes to sex toy recs. Every one of our round-ups includes toys for all budgets and bodies, and you better believe we read those product reviews (and test many of the brands IRL) so you don't have to do it yourself.
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