Sheepskin Lined Leather Martingale Dog Collar Fits necks measuring between 5.5 inches and 10 inches IMPORTANT: circumference of dog's neck or head must not exceed 10 inches Has no buckle, slips on over the head. Will not accommodate dogs with large heads. Works best for sight-hounds, greyhounds, salukis, whippets, etc. Handmade in the USA using real sheepskin and luxury bridle leather. Includes Manufacturer's Warranty