The Therapy-Tec Cooling Dog Coat does not require freezing and is designed to help keep your dog cool and comfortable in the warmer weather. With a special super absorbent PVA lining that is activated by cold water. The outer is mesh, which allows for air to flow through the cooling material. Once wet, these cooling coats are designed to cool your dog down when they are at risk of feeling hot, stressed and at risk of over heating. Features include touch tape chest and belly closure & elasticated leg straps.