We love biothane collars because they're waterproof, stink-proof, easy to clean and feel great! The perfect collar for your river rovers, SUP pups, and hiking hounds (also favored by couch potatoes as well).
S - 3/4"W and fit necks 10-15 inches
M - 1"W and fit necks 11-16 inches
L - 1" W and fit necks 15-24 inches