40" Length X 35" Width X 4" Thick is excellent for medium to large breed dogs. The order comes with 1 durable denim cover in navy blue color, 1 waterproof internal zippered cover and 1 solid 4 inches memory foam insert pad plus Get 1 extra Bonus brown color External Micro Suede with non slip bottom side cover on this bed purchase. Tired of changing your expensive pet bed regularly? Those pet bed need to replace frequently because of the low cost fabric and stuffing being used. Dogbed4less offer the best material for Comfortable, Supportive, Durability, Easy to clean and also looks great in your home. Our pet bed products are made with high quality durable fabric and top rated memory foam to ensure the ultimate comfort and orthopedic support, which are rarely sold elsewhere due to the higher cost and weight. Unlike other lower cost multi-layer glued partial memory foam, we do not cut corners and only offer 3.2 lbs high density solid memory foam similar to high end human therapeutic mattress stores to promote better sleep and healthy joint. Our high density memory foam is 5 times denser and 4 times heavier than regular foams, which will not flatten overtime and provide many years of comfort and support. Hypo-Allergenic memory foam are also highly resistant to bacteria, molds and mildews, and dust mites. 2 excellent layers of fabric covers: Internal layer Taffeta waterproof fabric zipper cover to help secure the pad and a durable 13 ounce/yard jean denim fabric zipper external cover (40"X35"X4" size) for easy cleaning. Our external denim cover is 100 percent cotton made which is interchangeable for top or bottom side which benefit the pets that are allergic to synthetic fabrics. The external cover is machine washable and dry-able. Additional replacement cover, more sizes and colors in blue, brown, olive green, gray or black are available here by clicking the Dogbed4less link on the top next to the title.