Strap-Ons

A strap-on is a wearable harness system that holds a dildo securely in place, allowing the wearer to use it for penetrative sex with a partner. The harness fits around the hips and thighs, typically secured with adjustable straps and buckles, with an O-ring at the front through which a dildo is inserted.

The dildo's flared base sits behind the O-ring, holding it securely in place during use. This system allows for genuinely hands-free penetrative thrusting — the wearer controls movement through their hips rather than needing to hold the toy manually.

Strap-ons are used across an enormous range of contexts — same-sex female couples, pegging play between a female-presenting and male-presenting partner, gender-diverse relationships, and solo practice for those building confidence and skill before partnered use.

Standard O-Ring Harnesses The most common and versatile format. An adjustable harness with a single O-ring opening compatible with any flared-base dildo of the matching diameter. Available in a range of materials including leather, nylon, and silicone — and in adjustable sizing to suit most body types.

Dual O-Ring Harnesses Features two O-rings, allowing for dual penetration setups or different dildo positioning options. A more advanced format suited to those who have established preferences around strap-on use and want more configuration flexibility.

Vibrating Harnesses Harnesses with a built-in vibrating element positioned against the wearer's body — adding stimulation for the wearer during strap-on use. This addresses one of the most common concerns about strap-on play, where the wearer traditionally receives less direct physical sensation than their partner.

Pegging Harness Sets Complete beginner-friendly sets including a harness, a beginner-sized dildo, and often lubricant — designed specifically for pegging play. Our pegging kits page covers complete sets in full detail, including options at every experience level.

Strapless Strap-On Systems An entirely harness-free alternative where the internal end of a specially shaped toy is held in place by the wearer's own pelvic floor muscles rather than a harness. Our strapless strap-ons page covers this harness-free format in detail for those who prefer a more intimate, barrier-free experience.

Double-Ended Strap-On Compatible Dildos Longer dildos designed for harness use on one end, with the other available for partner use in a double penetration or simultaneous configuration. Our double-ended dildos page covers this versatile format.

Femdom Strap-On Sets Harness and dildo combinations specifically positioned for female domination dynamics, often paired with restraints or other power exchange accessories. Our femdom gear page covers the broader context of strap-on use within power exchange relationships.

Harness fit is everything — A poorly fitted harness undermines the entire experience regardless of dildo quality. Look for a harness with multiple adjustment points at the hips and thighs, and check the sizing chart carefully against your own measurements before purchasing. Adjustable, multi-strap designs accommodate a wider range of body types than fixed-size harnesses.

Material — Leather harnesses offer a premium feel and mould to the body over time, but require more maintenance. Nylon harnesses are more affordable, machine washable, and a practical choice for beginners. Silicone harnesses are fully waterproof and easiest to clean thoroughly.

O-ring size and dildo compatibility — Confirm the O-ring diameter of your harness matches the base diameter of any dildo you intend to use. Most harnesses accommodate a range of standard sizes, but always check compatibility before purchasing dildos separately from a harness set.

Dildo size for the receiving partner — Choose dildo size based on the receiving partner's comfort and experience level, not the wearer's preference. For beginners or for anal use specifically, start with a smaller, smoother option. A dedicated thick [LINK TBC — "anal lubricants"] formula is essential for any anal use regardless of dildo size.

Vibrating vs non-vibrating — A vibrating harness adds sensation for the wearer, which many people find significantly enhances their experience and engagement during strap-on play. If budget allows, this is a worthwhile upgrade from a standard harness.

For a detailed sizing guide to help get the perfect harness fit on your first purchase — including how to measure correctly and what adjustment range to look for — strap-on harness sizing guide — how to get the perfect fit on your first try.

Exploring strap-on and harness play? These related categories are worth browsing:

• Pegging Kits
• Strapless Strap-Ons
• Double-Ended Dildos
• Femdom Gear
• Dildos & Dongs

Are strap-ons only used by same-sex couples?
No — strap-ons are used across all relationship types and gender combinations. They're popular within same-sex female couples, in pegging play between female-presenting and male-presenting partners, within gender-diverse relationships, and by individuals practising solo before partnered use. The format is genuinely inclusive of any anatomy or relationship structure.

Does the wearer feel anything during strap-on use?
With a standard harness, the wearer feels pressure and movement but not direct genital stimulation. A vibrating harness specifically addresses this by adding a vibrating element against the wearer's body, providing direct sensation during use alongside the experience of penetrating their partner.

How do I know what size harness to buy?
Measure your hip and upper thigh circumference and compare against the specific harness's sizing chart — sizing varies between brands. Adjustable harnesses with multiple strap points offer more flexibility than fixed-size designs and are generally the safer choice if you're uncertain about exact sizing.

Can any dildo be used with a strap-on harness?
Only dildos with a flared base are compatible with O-ring harnesses — the flared base sits behind the ring to hold the dildo securely in place. Confirm the base diameter matches your harness's O-ring size before purchasing a dildo separately.

How do I clean a strap-on harness?
Nylon and silicone harnesses can typically be hand washed or wiped down with antibacterial cleaner and air dried. Leather harnesses should be wiped with a damp cloth and conditioned periodically to prevent drying and cracking. Always remove the dildo from the harness for separate cleaning following standard toy cleaning practices.