Therapeutic Self Warming Fleece Pet Blanket Self-warming blankets are perfect for pets that get cold easily and senior animals that benefit from the added therapeutic benefits of warmth. Special materials in the inner layers reflect body heat back towards your pet to provide warmth on chilly days. Cozy soft fleece cover has a slip-resistant back and zips off to machine wash. Use indoors or out. Polyester & woven fleece; imported. Self Warming Pet Blanket measures 25-1/2" x 19".