Small Cylindrical Inverted Lock

The Small Cylindrical Inverted Lock takes inspiration from the motion of a piston. In traditional PIV (penis-in-vagina) intercourse, the penis moves back and forth like a piston in action. This cage embraces that idea with a cylindrical head, reinforcing the inverted design language. The cage body sits closer to the base than the ring, pushing your shaft inward, while the arc ring curves forward at the bottom, meaning your scrotum naturally shifts forward, pressing snugly against the cylindrical head. This creates a unique sensation when worn—one where your original penis disappears, replaced by a smooth resin cylinder.

As an inverted cage, your shaft will be pushed into your body, and this design isn’t meant to fully enclose the penis within the cylindrical head. Given the typical girth of most men, it’s unlikely the entire shaft will be wrapped up by the cage head. Instead, the cage primarily locks down the tip, keeping it secure and in position. A narrow slit at the front ensures ventilation and allows for controlled release without removal.

We anticipate that the inverted design will sit in close contact with your skin, so only the highest-quality materials are used, avoiding any coatings or dyes. This ensures a smooth, natural feel with no risk of irritation from cheap finishes.

Product Specs:

• Color: black/pink/white
• Material: medical-grade nylon resin
• Available sizes:
  • S: 1.06” (27mm) cage length, 0.91” (23mm) internal diameter
  • L: 1.46” (37mm) cage length, 0.91” (23mm) internal diameter
• Ring sizes: 1.65” (42mm), 1.77” (45mm), 1.89” (48mm), 2.05” (52mm)
• Weight: 1.94 oz (55g)

Package Includes:

• 1 x Small Cylindrical Inverted Lock
• 4 x Arc Rings: 42mm (1.65″), 45mm (1.77″), 48mm (1.89″), 52mm (2.05″)
• 1 x Lock with 2 Keys
• 1 x Black Drawstring Toy Bag