FPW1214: Features: -Dog muzzle-Made of nylon and completely washable-Do not have a lot of buckles that always need adjustments-Only one initial fitting is needed-Size 0 for snout 4 1/2. Tiny dogs- cavaliers, miniature dachshunds, miniature poodles, yorkies, etc-Size 1 for snout 5. Jack russells, king charles spaniels, pugs, standard dachshunds, westies, whippets, etc-Size 2 for snout 5 1/2. Beagles, border collies, cocker spaniels, springers, standard poodles, dobermans, etc-Size 3 for snout 6. Bull terriers, dobermans, german shepards, labradors, retreivers, setters, staffordshires, etc-Size 3XL for snout 10 1/2. Boxer type breeds short snouts-Size 4 for snout 8. Large dogs - bloodhounds, danes, pyreneans, st. Bernards, wolfhounds, etc-Size 4XL for snout 10 3/4 -Size 5 for snout 8 1/4. Bull mastiffs, rottweilers, etc-Size 5XL for snout 10 1/4. Options: -Available in several sizes.