Why Fleece Vest? Do you have that one sweater that you always wear? Well, our fleece vest is just that but for your dog. It is made with soft fleece for all-day wear and comfort while providing extra warmth. The built-in leash attachment lets you conveniently walk your dog outside without putting on an extra harness. The pullover design makes it lightweight and simple to put on by eliminating extra weight like zippers and buttons that are otherwise necessary with other designs.