These bondage cuffs are made of a heavy-duty nylon strap with a Neoprene backing and a Velcro closure. They are very adjustable and comfortable, easy to put on and remove. They can also be linked together end-to-end and worn as a collar or thigh cuff. Each cuff features an O-ring as a point of attachment and a small snap hook is also attached to one of the cuffs for clipping the cuffs together.