How are penis panties different from a strap-on harness? A strap-on harness is a set of straps that holds a separate dildo. Penis panties are a single silicone garment: the briefs and the dildo are one piece, shaped and colored to look like part of the body. They sit snug against the skin with no buckles or O-ring. That makes them useful for penetrative sex and equally for roleplay, costume or gender-affirming wear under clothing. The trade-off is fit, since the briefs come in set sizes rather than adjusting.
Hard-On Briefs: silicone panties with a built-in dildo
Hard-On Briefs are panty-style shorts made from stretchy, phthalate-free silicone with a large dildo and balls built into the front. The dildo is poseable, so you can bend it to the angle you need, and it has a realistic look and feel. It offers 6.8 inches of insertable length and is 1.8 inches across at its widest point.
The briefs fit close to the skin and can be worn under pants, a skirt or a dress. An opening at the back allows anal stimulation for the wearer without taking the briefs off. This listing is the size Small, which fits a 17.5 to 27 inch waist and 29 to 35 inch hips.
Best for: Suits people who want a wearable dildo that looks like part of the body: for penetrating a partner, for fantasy roleplay or as gender-affirming underwear. Measure your waist and hips before ordering, because the fit depends on the stretch of the silicone.
At a glance: Stretchy silicone · Poseable 6.8 in dildo · 1.8 in widest diameter · Rear opening
Key features
| One-piece silicone briefs |
Stretchy, phthalate-free silicone sits snug against the skin with no straps or buckles. |
| Poseable dildo |
Bend the shaft to the angle that suits you and your partner. |
| Realistic detail |
A lifelike look and feel, with a pair of balls at the base. |
| Rear opening |
The wearer can receive anal stimulation without removing the briefs. |
| Wearable under clothes |
Fits under pants, skirts or dresses for roleplay or everyday presentation. |
Specifications
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Size: Small
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Fits waist: 17.5 in to 27 in
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Fits hips: 29 in to 35 in
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Dildo insertable length: 6.8 in
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Dildo widest insertable diameter: 1.8 in
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Material: Silicone
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Color: Medium
How to use
Measure your waist and hips first to confirm the fit. Before dressing, dust your skin and the briefs with talc-free baby powder or pure cornstarch. Step in, then roll the briefs up over your legs and hips. Do not pull or tug, because that can tear the silicone. Bend the dildo to the angle you want. Apply water-based lubricant before penetration, and consider a condom over the shaft to keep it cleaner. To take the briefs off, roll them back down the same way you put them on.
Care
- Use water-based lubricant only.
- Wash with warm water and mild soap after every use, then let them air dry.
- Powder with talc-free baby powder or pure cornstarch before each wear.
- Roll the briefs on and off; pulling can tear the silicone.
- Store in a cool, dry place out of direct sunlight and apart from other toys.
More on materials in our material safety guide.
Frequently asked questions
What size will fit me?
This listing is the size Small. According to the distributor it fits a waist of 17.5 to 27 inches and hips of 29 to 35 inches. Measure both before ordering, since silicone briefs rely on a close fit to stay in place.
How big is the dildo?
It has 6.8 inches of insertable length and measures 1.8 inches across at its widest point, which is on the larger side. It is poseable, so you can adjust the angle, and it has balls at the base.
How do I put them on without tearing them?
Dust your skin and the briefs with talc-free baby powder or pure cornstarch, then roll them up over your legs and hips. Avoid pulling on the material. Take them off the same way, by rolling them down.
Which lubricant is safe to use?
Use a water-based lubricant. The briefs and the dildo are both silicone, and water-based formulas are the safe choice for silicone. A condom over the shaft is optional and helps keep it clean.
What is the opening at the back for?
It is an anal opening. It lets the wearer enjoy anal stimulation from a partner or a toy while keeping the briefs on, so you can switch roles without stopping to undress.
Get your Hard-On Briefs
Add the Hard-On Briefs Silicone Penis Panties to your cart for plain packaging, privacy-safe billing and a mystery gift in every order.
For adult use only. Read the instruction manual before first use. Specifications are the manufacturer's.
