Back on Track 39-Inch by 47-Inch Therapeutic Dog Bed/Mattress, Large This Therapeutic Dog Travel Bed is made from Welltex fabric infused with ceramic 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 The Therapeutic Dog Travel Bed is oval shaped and has a nonslip backing The Back on Track Therapeutic Dog Travel Bed comes with a carrying bag