Sportsheets Edge Leather Wrist Restraints. Cowhide leather. Nickel free hardware. Handcrafted in the USA. Buckle closure. Adjusts from 9" to 14". Removable metal tether. Includes: Two leather wrist restraints and metal tether. Ingredients: Cowhide Leather, Nickel Plated Hardware, Nickel Free Hardware, Polyurethane Foam, Polyester Fabric.