Sportsheets Edge Leather Ankle Restraints. Cowhide leather. Adjusts from 11.5 inches to 19 inches. Removable metal tether. Nickel free hardware. Buckle closure. Handcrafted in the USA. Comfort lined. Includes: two ankle restraints and metal tether. Materials: Cowhide Leather, Nickel Plated Hardware, Nickel Free Hardware, Polyester Fabric, Polyurethane Foam.