SEI MIO Cross the Threshold Adjustable Door-Based Bondage Cross System Restraint

Versatile Door-Mounted Restraint System

The SEI MIO Cross the Threshold transforms any standard doorway into a secure bondage station without permanent installation. This comprehensive restraint system utilizes the structural integrity of your door frame to create multiple anchor points for full-body positioning, offering couples a sophisticated alternative to traditional fixed furniture or wall-mounted equipment.

The system features adjustable webbing straps that loop over and around the door, creating four primary attachment points that correspond to wrists and ankles when your partner is positioned against the door. The over-door design distributes tension across the door's width rather than concentrating stress on hardware, allowing for confident restraint without drilling or damaging your space.

Construction and Materials

Built from heavy-duty nylon webbing, the straps resist stretching under tension while remaining comfortable against skin during extended scenes. Metal hardware—including D-rings and adjustment buckles—provides secure connection points that won't slip or fail during use. The cuffs incorporate soft neoprene padding to prevent chafing and pressure marks, balancing security with extended wearability.

Each strap adjusts independently via slide buckles, accommodating different body heights and limb lengths. This adjustability allows you to position your partner with arms raised overhead, spread wide, or in more relaxed configurations depending on your scene's intensity and duration.

Setup and Use

Installation requires no tools or permanent fixtures. Simply drape the main straps over the top of your door and position the side straps around the frame before closing the door to secure everything in place. The system remains stable through the compression created by the closed door, making it suitable for renters or those who prefer discretion.

The door itself supports your partner's weight, meaning they can lean back into the restraints or stand relatively upright depending on positioning. This door-mounted approach keeps the restrained partner accessible from the front while maintaining stability, and the entire system removes in minutes for storage.

Specifications

• Material: Nylon webbing with neoprene padding
• Hardware: Metal D-rings and adjustment buckles
• Fits: Standard interior doors (thickness approximately 1.5" to 2")
• Adjustment Range: Straps extend to accommodate various body heights
• Setup: No tools required, over-door installation
• Storage: Compact when removed, fits in drawer or bag

This system suits couples exploring restraint play in spaces where permanent modifications aren't possible, offering flexibility and accessibility for both beginners and experienced practitioners.