Caldera hot and cold therapy line is a trusted medical product sold throughout the United States, Asia, and Europe serving retail stores, physical therapy clinics, hospitals, and consumers alike. Now Caldera is taking the market with a revolutionary Hot and Cold Pet Therapy System. Based on extensive research with leading veterinary rehabilitation experts and designed with practical simplicity, the system is an innovative solution for animal hot or cold therapy applications that consumers and veterinary professionals are welcoming.Our patent pending Hot & Cold Pet Bed provides both cooling relief to an over-heated pet, or soothing warmth to a chilled or arthritic pet. The reusable Hot & Cold Pet Therapy Gel Pack(s) can be cooled in the freezer or warmed in the microwave. Simply slide the Pet Therapy Gel Pack(s) into the reinforced chew resistant and scratch resistant pockets to provide your pet the desired temperature relief they require. If no therapy is required, leave the gel packs in place, and turn the bed over to provide your pet a relaxing multi-layered pillow top comfort. Each pet bed is constructed using a tough 1000 denier Cordura Nylon outer fabric. Each of the rounded corners and pockets of the bed is protected utilizing a 40 ounce truck tarp material, creating the ultimate chew and scratch resistant pet bed. All Therapy Gel is latex free, non-toxic, microwave and freezer safe, and remains pliable when frozen.Includes: 28” x 41” pet bed with reusable Hot & Cold Pet Therapy Gel Packs.SIZE LARGE: Fits most standard large dogs such as Akita, Anatolian Shepherd, Bernese Mountain Dog, Bouvier de Flandres, Doberman, Greyhound, Labrador Retriever, Golden Retriever, German Shepard, Rhodesian Ridgeback & Rottweiler.