Sportsheets Under The Bed Restraint SystemThe perfect bedroom bondage product! Includes 4 adjustable bondage cuffs (fits 4 12 inch wrists), 4 straps secured to one connector strap that fits securely under your mattress. The bondage straps quickly fit beneath any mattress. No hooks and adjusts to the size you desire. Easy setup on any mattress, including California King. Restrains your partners arms and legs from along the sides or bottom of the bed. Portable and great for a surprise getaway.