Edge Leather Arm/Thigh Restraints from Sportsheets. Made of Cowhide leather. Nickel free metal. Handcrafted in the USA. Adjustable to fit arms or thighs. Adjusts from 14 inches to 21.5 inches. Buckle closure. Removable metal tether. Comfort lined. Can be used as a collar. Includes: two leather arm or thigh restraints and metal tether. Materials: Cowhide Leather, Nickel Plated Hardware, Nickel Free Hardware, Polyester Fabric, Polyurethane Foam.