Product information

Where control locks in

Once secured onto the locking pin, the cap locks the restraint into place. From that moment on control is no longer yours.

The Mechanism of Control

The locking cap is the ingenious component that transforms our rubber harnesses from simple restraints into secure bondage equipment. This precision-engineered cap works in conjunction with the magnetic key to create a locking system that is both highly secure and instantly releasable when needed. Once the cap is pressed onto the locking pin, it engages an internal mechanism that prevents removal without the magnetic key, ensuring restraints stay exactly where they're placed.

Engineering & Design

Each locking cap is manufactured to exacting specifications to ensure consistent performance across all Rubber Elite restraints. The cap features an internal magnetic locking mechanism that responds only to the specific magnetic field generated by our magnetic key. This design prevents accidental release while ensuring intentional unlocking is quick and effortless. The exterior of the cap is smooth and low-profile, preventing snagging on clothing or other materials during use.

Durable Materials

Constructed from high-grade materials selected for their durability and resistance to wear, these locking caps are built to withstand repeated use without degradation of the locking mechanism. The materials are chosen to complement the rubber restraints aesthetically while providing the structural integrity necessary for reliable performance. The cap's finish is resistant to corrosion and maintains its appearance even with regular use and cleaning.

How to Use

To engage the lock, simply thread the restraint strap through the reinforced loop, overlap the strap to your desired tightness, and press the locking cap firmly onto the locking pin until you hear or feel it click into place. The restraint is now secured and cannot be removed without the magnetic key. To release, place the magnetic key directly against the cap - the magnetic field will trigger the internal mechanism, allowing the cap to be lifted off the pin.

Safety & Maintenance

Always test the locking mechanism before each session to ensure proper function. The cap should engage smoothly and release immediately when the magnetic key is applied. Clean the locking cap after use with mild soap and water, ensuring no debris enters the locking mechanism. Dry thoroughly before storage. Inspect regularly for any signs of wear or damage to the locking mechanism.

Compatibility

These locking caps are designed specifically for use with Rubber Elite restraints and are compatible with all products in our collection. Each restraint set includes the appropriate number of locking caps, but additional caps are available for replacement or for those building custom restraint configurations.

Key Features:

  • Precision magnetic locking mechanism for secure restraint
  • Instant release with magnetic key for safety
  • Durable construction for long-term reliability
  • Low-profile design prevents snagging
  • Compatible with all Rubber Elite rubber gear
  • Easy to clean and maintain

The locking cap is the critical component that elevates our rubber harnesses from simple restraints to professional-grade bondage equipment, providing the security and peace of mind that serious practitioners demand.

Sizing chart / guide
Size in CMSMLXL
Wrist restraints15 - 2220 - 27
Ankle restraints20 - 2725 - 32
Neck restraints32 - 3937 - 4442 - 49
Bicep restraints25 - 3230 - 3735 - 42
Thigh restraints45 - 5250 - 5755 - 6260 - 67
Care instructions

Step 1 – Rinse with lukewarm water (25–30 °C) after each use; avoid heat.

Step 2 – Clean with mild, solvent-free soap or latex cleaner; do not soak.

Step 3 – Dry thoroughly, especially metal parts; keep away from sunlight and heat.

Step 4 – Condition regularly with a silicone-based rubber product.

Step 5 – Store in a cool, dark, dust-free place. 


See our full Care Instructions page for details.

Materials and allergy safety

Materials

  • Skin safe rubber (latex free)
  • Heavy-duty industrial rubber
  • Nickel plated rivets
  • Stainless steel loops
  • Magnetic key

Allergy safety 

Your safety comes first. If you have a known rubber allergy, or if you are unsure, perform a patch test before full use. Place the product on clean and dry skin for 20 - 30 minutes and check for redness, itching or irritation. If any reaction occurs, discontinue use immediately and consult a medical professional if needed.