Make your next bondage session more secure and comfortable with these durable Heavy Duty Cuffs The inside of the cuffs are lined with neoprene, making it easier and more comfortable for extended use, and have a nylon velcro strap. One cuff has a spring loaded metal clip while the other cuff has a D-Ring. You can use the clip to connect one cuff to the other or you can use the D-Ring and clip separately and attach each to a different object Explore the many and endless possibilities of bondage with the Marquis Wristlets Measurements: Each cuff is approximately 16 inches in total length and 2 inches wide. Material: Neoprene, nylon, Velcro, metal Color: Black