This is premium leather dog collar from Angel pet Supplies Inc. Soft padded genuine Argentne leather is known for it's quality and durability. These hand crafted luxury collars will blow your mind when you see the quality and feel it in your hand. SIZING: This dog collar utilizes a metal buckle clasp similar to most mens belts. Sizing is given as a range of neck lengths. Measure your dogs neck size or its current collar length (not including buckles) to obtain correct sizing. Always use the size chart to match up the neck size with the collar size. The actual collar size is 1 to 3 inches longer than the largest neck size because the sizing hole is inset from the end of the collar Size #16 = 11.5-14" long x 3/4" wide - Good for most Boston Terrier, Pug, and similar breeds Size #18 = 12.5-16" long x 3/4" wide - Good for most French Bulldog, Cocker Spaniel, Collie, Beagle, and similar breeds Size #20 = 14.5-17.5" long x 1" wide - Good for most Collies, Pointers, and similar breeds Size #22 = 16.5-20" long x 1.5" wide - Good for most Pit Bulls, Retrievers, Boxer, and similar breeds Size #24 = 17.5-22" long x 1.5" wide - Good for most Shepherds, Labs, English & American Bulldogs, and similar breeds Size #26 = 20-24" long x 2" wide - Good for most Rottweilere, Corso, and similar breeds Hot Dog Collars is the place to personalize your pet. In business for over 12 years, we know pets and we know personalization. Most importantly, we know and love our customers. If something goes wrong (rare, but it happens) you can count on us to make it right!