These fur-lined cuffs offer comfort for the skin but the durability that you would expect from a pair of restraints. The cuffs easily attach to the wrists and/or ankles and are called locking cuffs because you use a small padlock on the buckle to ensure that your partner can't escape. They are made of fine high quality leather. There's an O-ring on the cuffs so that you can attach a leash or attach the cuffs to each other. Specifications: These restraints are sold as a pair. Locks are sold separately. Sizing: The wrist cuffs can be sized from 5.5" to 9" inside diameter. The ankle cuffs can be sized from 7.5" to 12" inside diameter. They both have a 2" wide English Bridle Leather strap. These are ankle cuffs.