Luxurious open mouth gag with adjustable buckle closure with 2 interchangeable rings: Nickel-Free iron plus rubber. Ring diameter: 1.5 inches. Handmade, double padded and double stitched with designer accents. Soft and plushy on one side with designer fabric on the other. Adjusts up to 23.5 inches. Includes two fully adjustable and detachable multi-use clamps with soft comfortable pads. High quality tiered chain. Non-tarnishing, nickel free. Materials: Polyester straps, lining,nickel free Iron chains, ring, clamps, rivets, D-rings, grommets, nickel free alloy buckles, clips, Rubber ring, phthalate free PVC pads. Dimensions: 2.25 inches by 1.25 incheseach clamp, 22 incheseach chain, Ring diameter 1.5inches. Adjusts up to 23.5 inches.