LupinePet 1 inch wide martingale collars are suitable for medium and larger dogs. Features strong bar tack stitching and welded D rings. A limited slip martingale style collar for walking and training. It should not be left on an unattended or unleashed dog. Slips on over the head. What's Included: 1in Black 15in-22 Martingale CollarLimited-slip martingale action prevents a dog from backing out of its collarMatching leashes, collars and harnesses availableProudly Built in Conway, New Hampshire and GUARANTEED (Even if Chewed)