SU Tri-Volver Dual-Motor Strapless Strap-On

The Strap U Tri-Volver is a vibrating strapless strap-on: a double-ended silicone toy that the wearer holds inside their own body, with no harness needed. Its point of difference is dual motors plus a clitoral stem, so the wearer gets internal and external vibration while the partner receives a slim, smooth shaft.

How a strapless strap-on stays in place

The shorter end goes inside the wearer and is held there by its shape and by gentle squeezing of the pelvic floor muscles. On the Tri-Volver that end has two smooth swells, which give the muscles something to grip, while a short protruding stem rests against the clitoris. Once it's seated, the longer shaft points forward for the receiving partner. It takes a little practice; most people find it steadier in slow, close positions such as missionary or spooning than in fast thrusting.

Vibration for both partners

Two motors spread vibration through both ends, so the person wearing it and the person receiving it both feel it. There are seven modes in total: three speeds and four patterns. A single control button sits where you can reach it during play, which matters, since you won't want to pull the toy out to change settings.

Sizes on each end

The partner's shaft is 6 inches insertable and 1.25 inches in diameter, with a pronounced coronal ridge. That's a slim, approachable size, good for couples new to pegging or partners who prefer less girth. The wearer's end is 4 inches insertable and 1.3 inches in diameter. Total length is 8.5 inches, so it stays fairly compact in a drawer or travel bag.

Getting started

Charge it fully, then try the wearer's end alone first, while lying down, to get used to the fit. Use water-based lube on the receiving shaft but only a little on the wearer's bulbs, because too much makes it harder to hold in place. Start on the lowest speed and agree beforehand how you'll signal for a change. Expect the first session to be about learning the fit rather than getting everything right.

Who it suits

The Tri-Volver suits couples who want both people to feel vibration during penetration, rather than one partner doing all the work. The wearer should be comfortable with a 4-inch insert about 1.3 inches wide, roughly the size of a slim vibrator. It's less suited to wearers who don't want anything inside them; for them, a separate dildo in a harness such as the Strap U Avalon works better. It's also not the toy for vigorous, fast thrusting, since holding it in place relies on the wearer's grip.

Water and care

The Tri-Volver is waterproof, so it can come into the shower or bath. It's made from silky, non-porous silicone; skip silicone lubes and stick with water-based. Clean both ends with mild soap and warm water after use, dry it fully and recharge via the USB cable before storing it.

Specifications

• Brand: Strap U by XR Brands
• Type: double-ended vibrating strap-on, worn without a harness
• Material: silicone, phthalate-free
• Total length: 8.5 in
• Receiving shaft: 6 in insertable, 1.25 in diameter
• Wearer's end: 4 in insertable, 1.3 in diameter, with clitoral stem
• Motors: two
• Vibration: 3 speeds and 4 patterns, single button
• Power: rechargeable via USB
• Water: waterproof
• Lube: water-based only

Read our guide to couples sex toys or browse our harness-free strap-on range.