New 4" Thick Luxury Comfortable 100% 1 piece Therapeutic Memory Foam pad (Secure by breathable waterproof fabric internal zipper cover + External durable canvas cover). Best material for best comfort and long lasting (35"X20"X4" size). Additional color in brown, olive green or larger size bed is always available here at dogbed4less link on the top next to the title. * Relieves the pain of arthritis, hip dysplasia, joint and muscle stiffness. Our high density Memory Foam never loses its shape, providing many years of comfort & support. Memory foam has a soft feel that is similar to gel in that it adjusts to your body"s shape and pressure point for maximum resiliency and comfort. Non-allergenic and perfect size pad for your small to medium pet up to 60 lbs. Great for pets with Arthritis. * 2 layer of fabric cover : Inner layer Full waterproof Taffeta fabric zipper cover with strong industrial stitch to secure the pad. The bed also comes with our durable zipper canvas fabric cover (outside layer) for easy cleaning and maintain. Only the internal cover is waterproof. * The external fabric cover is luxury canvas fabric with zipper in size 35"X20"X4". The external cover is made by 100% cotton with 9oz Canvas fabric in olive green color. Unlike any other cover, our new improved hidden zipper with eyelid design plus extra stitching boasts lasting quality, wash after wash. * Buy 2 discount bundle offer : We will ship ONE external canvas cover for free in the total shipment if you buy this bed in quantity of 2 (Total 1 free cover for 2 beds order). Please select large, XL, XXL or jumbo size bed in my other listing for very large dog.