Back on Track Therapeutic Dog Rain Rug with Filling, 67cm Back Length The Back on Track Dog Rain Rug is a Tough Outdoors Rug made From a Breathable Rain Resistant Nylon Outer Fabric Our Dog Rain Rug is Made from Fabric Infused with Ceramic Powder; The Ceramic Reflects Natural Body Heat and Creates a Soothing Infrared Warmth The Dog Rain Rug Has an Interior Lining of Polypropylene and an Insulating Filling with Reflectors for Added Visibility State-of-the-art Therapy Product, Clinically Proven to Reduce Pain and Chronic Inflammation The Infrared Warmth Can Help Relax Your Dog's Muscles and Relieve Joint Pain