Thermal Therapy™ offers an outstanding, non-invasive and soothing technology. Made of a lightweight material infused with ceramic powder to help loosen muscles and increase circulation. Fabric is constructed with exclusive technology designed to reflect Far Infrared (FIR) waves back to the body. The Thermal Therapy TMCrate Mat is ideal for competitive sporting dogs, older dogs and dogs who suffer from arthritis. Use to line your dog’s crate, carrier, or on long car rides where your pet will appreciate the added comfort. L size (36"L x 23"W). 270g knitted fabric (FIR)/440gm fiberfill/70D poly.