Fetish Fantasy Series Heavy Duty Cuffs secure your lover with this durable Heavy Duty Cuff set. Lined with neoprene and encased in a thick, adjustable nylon strap, the cuffs connect with 2 high-strength D-rings and a spring-loaded metal clip. They are made to play hard and easily adjust to fit snug and tight without slipping. Your lover will not even dare and try to escape! One size fits most. Materials used to makes cuffs nylon, metal and Velcro.