Caldera Pet Therapy Gel packs delivers soothing hot or cold therapy to targeted areas. Designed with Reusable Gel packs, this product also features velco straps to easily secure in place where your pet needs relief, allowing your pet the mobility and independence he loves. The Caldera Therapy Gel Pack also helps to minimize swelling, inflammation and pain, while providing your pet the relief needed to get heal quickly. This product is machine washable, for repeated use.