Japanese Style Bondage Silicone Cuffs Large Black from Doc Johnson Novelties. For both beginners and restraint enthusiasts, these premium silicone cuffs feature a single piece molded design with no metal hardware to break, snag apparel, or irritate skin. Perfect for light bondage play, these firm yet flexible wrist cuffs provide strong but comfortable restraint and submission without pain. Specifications: durable, hygienic Silicone. Sturdy, yet stretchy for a snug, perfect fit. Metal free design for no bruising or snagging. Can be worn on wrists or ankles. Hypoallergenic material, phthalate free, body safe. Total length 6.9 inches. Proudly, made in America