This sexy restraint kit contains everything you need to keep your sub on their knees where they belong. The included collar is attached to each of the 4 cuffs by snap hooks and tethers, keeping them in a prone position. The nylon tethers will force them to stay kneeling and are adjustable up to 31 inches. The cuffs and collar are made from comfortable, all man made materials, for a cruelty-free and vegan friendly bondage experience. Adjustable Velcro closures are designed to fit all body types and sizes, while keeping them firmly in their place. Measurements: Collar: 22 inches in total length, 2 inches in width; Cuffs: Fits wrists between 8 and 11.5 inches in circumference, 2 inches in width; Clamps: 3.5 inches in length, 1.5 inches in width, connecting chain measures 12 inches in length; Tethers: 31 inches in length, 1 inch in width. Material: Velcro, Neoprene, nylon, metal. Color: Black. Note: Kit includes (4) cuffs, (1) collar, (2) double sided snap hooks, and (2) tethers