Zippy Dynamics "Zippy" Dog Suit A true full body fit that protects your dog from head to paw, helping to keep dirt and insects away. A lined zipper that runs along the back of the suit, will not catch on your dogs fur, and will make dressing easy. A water resistant shell (80% polyester/20% cotton) that shields your dog from wind, rain, and snow. A breathable inner lining (100% polyester) that locks in warmth and insulates your dog on cooler days. Patented Zippy Dynamics technology.