Just add a SnuggleSafe heat pad to the zippered pocket * Pet Companion provides 10 hours of snuggly heat * Perfect cushion for comforting puppies, older dogs, or just to pamper a pet * Cozy with a fun design * Washable * Cozy plush cover for your pet"s SnuggleSafe Heatpad * Machine washable * Measures 16-inches x 13-inches * The SnuggleSafe may be heated with or without the cover attached * Zippered fastener provides a secure fit