Quick answer
To use a strap-on harness with a double dildo, choose a harness that offers two separate holes—like the SpareParts Deuce—so each partner can enjoy simultaneous stimulation. Adjust the fit snugly, apply plenty of lube, and communicate throughout.
Why the harness design matters for double dildos
Not every strap-on harness works well with a double dildo. Standard single-ring harnesses force both partners to share one opening, which can limit movement and reduce comfort. A harness with two separate holes—one for the wearer’s penis and one for the dildo—lets each partner control their own angle and depth. The SpareParts Deuce is built exactly for this: it has an internal pocket to hold the wearer’s anatomy and a second hole for the toy, making double penetration smoother and more stable.
Lube is your best friend with double stimulation
Double dildos involve more surface area and often more friction than single toys. Using a high-quality lubricant on both ends—and reapplying as needed—reduces discomfort and makes the experience more pleasurable for both partners. Silicone-based lube lasts longer but can damage silicone toys; water-based lube is safer for all materials and easier to clean up.
Step-by-step: Using a double strap-on harness
- 1. Choose the right harness and dildo: Select a harness with two separate openings, like the SpareParts Deuce. Make sure your double dildo has a stable base that fits securely in the toy hole. Check the harness size against your waist and thigh measurements. A single-ring harness will not work well for double penetration—look for dedicated dual-hole designs.
- 2. Put on the harness and adjust the fit: Step into the harness and pull it up to your hips. Tighten the straps so the harness sits snugly but does not dig in. The internal pocket (if present) should align comfortably with your anatomy. The toy hole should be positioned over your pubic area. A loose harness will cause the dildo to wobble; too tight can restrict blood flow. Aim for a firm, comfortable hold.
- 3. Insert the double dildo: Slide the dildo through the toy hole until the base is flush against the harness. If your dildo has a flared base, make sure it is fully seated. For double-ended toys, the receiving partner can guide the other end into place. Do not force a dildo that is too large for the harness ring—it may tear the material or slip out during use.
- 4. Apply lubricant generously: Coat both ends of the dildo and the wearer’s anatomy (if exposed) with a water-based or compatible silicone lubricant. Reapply during the session if things start to feel dry. Silicone lube can degrade silicone toys—check your dildo’s material before choosing.
- 5. Get into position and communicate: Start in a position that gives both partners control, such as missionary or doggy style. The wearer can thrust gently while the receiving partner adjusts their angle. Talk about what feels good and what needs adjustment. Double dildos require more coordination than single toys—go slow and check in often, especially the first few times.
Product spotlight
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SpareParts Deuce Double Strap Harness - Black: Deuce from SpareParts is the first harness designed especially for men. It has two separate holes so the penis extends through one and a toy through the other, plus an internal pocket for comfort. This design eliminates the need to choose between using your own anatomy or a toy—both can work together, which is ideal for double penetration or maintaining intimacy during erectile changes.
SpareParts Deuce Double Strap Harness - Black
