Entice Accessories Open Mouth Gag with designer accents. Adjustable buckle closure with 2 interchangeable rings; Nickel-Free iron plus rubber. Hand made, double padded, double stitched. Soft and plushy on one side, premium quality faux leather on the other. Non-tarnishing, Nickel-Free. Dimensions: Adjusts up to 24 inches, 2 inches ring diameter. Materials: Phthalate-Free PVC strap, Polyester lining, Nickel-Free Iron ring, grommets, Nickel-Free Alloy buckle, rivets, Rubber ring.