Allied Precision Kool Bed Medium Refreshing Cool Surface For Your Pet – Unique Mesh Padding. FREE cover included. Provides cool surface for your pet. Uses no electricity. Tough nylon/vinyl surface. Dry, cool, cushioned pad. Unequaled fluid flow for maximum heat transfer. Easily fills with tap water. Unique Fridgefold Design fits in refrigerator for extra cooling, or for compact storage. Can be used indoors or outdoors. Therapeutic. Unfolded size is 24″ X 36″. You know your pet is your best friend and they deserve the best. Help them avoid the hot summer ahead and make them more comfortable.