Sportsheets Edge line Soft Leather Posture Collar Black made from cow hide leather. Nickel free metal hardware. Posture collar dictates posture obedience. Lockable buckle closure. Solid metal D-Ring faces front for easy attachment. Fits necks from 14.25 inches to 18 inches. Materials: cowhide leather, polyester, nickel free metal. Includes 1 soft lined leather posture collar. Fits necks, inside diameter from 4.62 inches to 6.21 inches. Edge Chain Leash not included. Sold separately SS98029.