zipper

A zipper is a BDSM toy made of a continuous string or rope, typically made of silicone or metal, with individual metal or plastic clips or rings that can be snapped onto each other along the length of the rope. The ends of the rope usually have a ring or loop that can be used to securely fasten it around a fixed object or a partner's body part. The user can then manipulate and control the movement and positioning of their partner by sliding the clips up or down the rope, creating a sense of restraint, suspension, or bondage.