These heavy duty arm binders are a great at keeping the arms pulled tight behind the back. Also helps force the chest outward. Can be used in conjunction with our leather wrist restraints for additional security. Measurements: Total length: 20.5 inches, 1.5 inches wide; Cuffs: 11.5-17.5 inches in circumference; Center connector: 4.25 inches in length; O-rings: 2.5 inches in diameter. Material: Leather and metal. Color: Black