The Pet Life Faux Shearling "DUGGZ" Dog Shoes are composed of a faux suede and sherpa outer shell and inner lined with Thinsulate insulation. Features a back zipper and wraparound hook and look closure for easy on and off access and added support and comfort. Features rubberized grips. These shoes are essential during the colder weather climates protecting your dogs paws by helping prevent frostbite. Essential for dogs in recovery and especially elder dogs and puppies. Sizing Instructions: Measure the sole of your pet's foot - length x width (inches): Extra small: 2.15 x 1.51" Small: 2.28 x 1.61" Medium: 2.46 x 1.87" Large: 2.64 x 2.01" # Pieces In Set: 4 Features: Comfort Grip, Faux Fur Lined Pet Intended For: Dog Base Material: 80% Polyester, 20% Rubber Care: Machine Wash, Tumble Dry Country of Origin: Imported