The cooling pad cover is designed to protect the pad against dirt and your dog's paws. Many dogs burrow before they lie down and this cover will help reduce scratches on the pad. It will also keep the pad clean and it's machine washable. The cooling pad cover will not affect the performance of the cooling pad. We specifically designed it to be soft and comfortable while still allowing your dog's weight to activate the gel inside and cool him down. *Light blue in stock - we feel it looks the "most cooling!" Other colors offered (see photos), call the store for info and stock availability.