Bed Binding Restraint Kit - Black. Transform any bed into a wonderland of fun and let the games begin! The durable nylon tethers connect to 4 super soft neoprene-lined cuffs, which easily adjust to securely hold your partner in place. These under mattress bed bindings open a world of possibilities for you and your lover. Just secure under the mattress to enjoy. Explore your deepest fetish fantasies!