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The Blush Lock On Strap-On Harness is a black nylon strap on harness built around Blush's Lock On attachment, which holds a compatible dildo firmly in place even during vigorous thrusting. The straps adjust to fit waists up to 60 inches, and a small pocket holds the included vibrating bullet so the wearer gets sensation too. It suits couples who want a stable, adjustable harness and are happy to pair it with Lock On dildos.

How the Lock On system works

Most harnesses hold a dildo by squeezing its base inside an O-ring, which works but can wobble with a smaller base or during hard thrusting. Blush's Lock On system adds a fixed attachment point: a compatible dildo connects to the Lock On fitting on the front of the harness and stays put. That's the main reason to choose this harness. You get a firm, stable connection that doesn't shift as you move, which makes it easier for the wearer to control depth and angle, and less likely that anything slips out at the wrong moment.

The catch is compatibility. The fitting is made for dildos sold as Lock On compatible, so check that before you buy a toy to go with it. Blush calls this an O-ring harness, but the supplier doesn't say whether ordinary flared-base dildos fit securely without the Lock On fitting, so don't count on it for those.

Fit and adjustment

The nylon straps adjust to fit waists up to 60 inches, so it covers a wide range of bodies. Step in, pull it up so the front plate sits over the pubic bone, then tighten the straps evenly on both sides. It should feel snug and stable without digging in. A harness that's too loose lets the dildo droop and puts more strain on the wearer's hips; too tight and it chafes. Do a few test thrusts before you start, and adjust once more after a couple of minutes, since straps often settle.

A vibrating strap on for the wearer

Wearing a strap-on can leave the wearer with little direct sensation. This harness has a pocket behind the front that holds the included one-speed vibrating bullet, so the wearer feels buzz against their own body while they thrust. It runs on one AAA battery, which isn't included, so pick one up before your first session. The bullet is optional. Leave the pocket empty if you'd rather not have vibration, or slip the bullet out and use it by hand during foreplay.

First-time tips and care

If you're new to strap-on sex, start with a smaller, flexible dildo and plenty of water-based lube on it. Let the receiving partner guide the first few strokes, or lie back and let them ride, which takes pressure off the wearer while you both learn the rhythm. Positions where the wearer can use their hips rather than their back, such as kneeling, are easier at first. After use, remove the bullet and dildo, hand-wash the nylon straps in warm soapy water and let them air-dry. Wipe the bullet with a damp cloth rather than soaking it.

Specifications

  • Brand: Blush, Lock On
  • Type: adjustable strap-on harness with Lock On attachment
  • Material: nylon straps
  • Fit: adjusts to waists up to 60 in
  • Compatibility: Lock On compatible dildos (sold separately)
  • Vibration: one-speed bullet included, sits in a pocket for the wearer
  • Power: 1 x AAA battery (not included)
  • Colour: Black

Browse more from Blush, compare our strap-on harnesses, or find a harness-compatible dildo to go with it.

Helpful Information

Frequently Asked Questions

Helpful answers about Blush Lock On Strap-On Harness – Black.

What is the Blush Lock On Strap-On Harness?

It's an adjustable nylon harness with a Lock On attachment that holds Lock On-compatible dildos securely. The Blush Lock On Harness also has a pocket for the included one-speed bullet, so the wearer feels vibration during sex.

What waist size does the Blush Lock On Harness fit?

The Blush Lock On Harness has adjustable nylon straps that fit waists up to 60 inches. Tighten both sides evenly so the front sits firmly over the pubic bone without digging in, and recheck after a few minutes as the straps settle.

What dildos work with the Blush Lock On Harness?

The Lock On fitting is made for dildos sold as Lock On compatible, which attach to it and stay secure. The supplier doesn't confirm a fit for standard flared-base dildos, so check a toy is listed as Lock On compatible before buying it for this harness.

Does the Blush Lock On Harness vibrate?

Yes. A one-speed vibrating bullet is included and slips into a pocket behind the front, so the wearer feels it while thrusting. It needs one AAA battery, which isn't included, so keep a spare with the harness.

How do I put on the Blush Lock On Harness?

Attach your Lock On dildo first, then step into the Blush Lock On Harness and pull it up so the base sits over your pubic bone. Tighten the straps until it feels snug and stable, then slide the bullet into its pocket if you want vibration.

Is a strap on harness like the Lock On good for beginners?

Yes, as long as you pair it with a beginner-friendly dildo. The Lock On's firm attachment means less wobble while you learn to thrust. Start with a smaller, flexible toy and lots of water-based lube. Our guide to couples' toys has more ideas.

How do I clean the Blush Lock On Harness?

Take out the bullet and dildo, then hand-wash the Lock On Harness straps in warm soapy water and let them air-dry flat. Wipe the bullet with a damp cloth instead of submerging it. Store the harness loosely coiled so the straps don't kink.

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