PAWZ is the world's only disposal and reusable water-proof dog boot. Made of natural rubber. PAWZ are 100-percent biodegradable. PAWZ are designed to go on easily and fit securely without zippers or straps. Fashionable yet durable. PAWZ offer serious paw protection. PAWZ is the most natural feeling boot your dog can wear because without padding your dog can feel the ground providing a needed sense of security. Like a sock, PAWZ moves with your dog allowing full paw motion and maximum comfort, and imagine never losing another expensive boot again. PAWZ come 12 in a pack and each boot may be worn many times. HOW TO MEASURE YOUR DOG'S PAW For the best fit, measure from the bottom of the big heel pad to the tip of the longest toe nail. If the paw is in-between two sizes, select the larger size. Pawz should fit securely around the leg and comfortable around the paw. TINY - FOR PAWS TO 1" XX-SMALL - FOR PAWS TO 1 1/2" X-SMALL - FOR PAWS TO 2" SMALL- FOR PAWS TO 2 1/2" MEDIUM - FOR PAWS TO 3" LARGE - FOR PAWS TO 4" X-LARGE - FOR PAWS OVER 4" See size chart with actual size of boots on manufacturer's page here: http://pawzdogboots.com/boots/ Breeds which most often use the size Small American Eskimo Australian Terrier Bichon Frise Border Collie Border Terrier Boston Terrier Bull Terrier Cavalier King Charles Dachshund Dandie Dinmont Terrier English Toy Spaniel French Bulldog Glen of Imaal Terrier Havanese Irish Terrier Jack Russell Terrier Lakeland Terrier Lhasa Apso Manchester Terrier Norfolk Terrier Parson Jack Russell Terrier Pembroke Welsh Terrier Petit Basset Griffon Poodle Pug Sealyham Terrier Shiba Inu Silky Terrier Skye Terrier Schnauzer, Mini Sussex Spaniel Toy Fox Terrier West Highland Terrier Wire Fox Terrier