Strap-Ons & Harnesses

A strap-on is two things sold as one idea: a harness that stays on the body, and a dildo that slots into it. A few come as matched sets, most do not, and buying the two separately without checking is how people end up with a dildo that will not sit in the ring.

It gets used for pegging, queer sex, gender-affirming play and power exchange, and the practical requirement is the same across all of them. The harness has to hold still while you move, which is entirely about fit and not at all about the toy.

The number that matters is the O-ring diameter measured against the dildo base, not the dildo length and not the widest part of the shaft. A base wider than the ring will not go in, and one much narrower will pivot while you use it. Most harnesses ship with two or three rings for exactly this reason, so check what is included before assuming you need to buy more.

Three ways of attaching the same thing:

• Brief-style harnesses: cut like underwear, so the load spreads across the hips. The most comfortable for anything long, and the easiest to get into.
• Adjustable strap harnesses: buckles and straps rather than a fixed cut, which fits a far wider size range. More adjustment up front, better fit once it is dialed in.
• Strapless and vibrating: held internally with no harness at all. A different sensation for the wearer, and reactions are split on how secure it feels.

Pair a harness with a flared-base dildo from harness compatible dildos, or start from best pegging dildo if pegging is the point. Fashion and body harnesses meant to be worn rather than used are in harness.