Sensory play just got more interesting! The Ouch! Glow-in-the-dark Rope adds an exciting glowing element to any BDSM, shibari, or sensory play scene. Expose the rope to light before you want to get bound up in it and then watch is show you each knot and weave as you explore the dark. Made of 100% polypropylene fiber and 16 strings, Ouch! rope is as strong and dependable as it is fun!