Ultra Paws Cool Dog Boots - All Sizes - Protection on Hot Surfaces Great for sidewalks, asphalt, boats, docks and sand! Petite - 1 1/4" Paw Width. X Small - 1 3/4" Paw Width. Small - 2 1/4" Paw Width. Medium - 2 3/4" Paw Width. Large - 3 1/4" Paw Width. XL  4 Paw Width. Easy to put on - difficult to slip off! Deflects up to 75 degrees from surfaces to the inside of the boot Breathable mesh upper on all size boots