The Pet Life Fashion Fur-Comfort Premium PVC Waterproof Supportive Dog Boots are composed of a Waterproof PVC Outer shell and Faux Fur and inner lined with Thinsulate insulation. Features a Back Zipper and Double Wrap Around Velcro for Easy On Off access and added support and comfort. These Dog Shoes offer a higher level of ankle support. Features Rubberized Grips. These insulated dog 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.