Dogbed4less Jumbo Extra Large Orthopedic Gel Infused Memory Foam Dog Bed with Washable External Zipper Cover and Waterproof Liner, 55X37X8 Inches WATERPROOF LINER + EXTERNAL COVERS - The bed comes with 1 Waterproof internal zipper case to protect the memory foam and 1 Heavy Duty 1680 denier nylon external zipper cover in Seal Brown color. 1680D NYLON COVER - Removable washable external cover with strong zipper in gusset style and extra stitching to prolong the life of the bed, wash after wash. This heavy duty nylon cover will resists light scratching, water, hair, dirt, and odors, and can be easily wiped down or machine-washed. 8" MEMORY FOAM ORTHOPEDIC SUPPORT - Top rated quality 55"X37"X8" hypoallergenic high density 100% gel infused temperature regulating memory foam pad provide the support and relieves the pain of arthritis, stronger durability and resilience that will not flat overtime to promote better sleep and healthy joint. THERAPEUTIC COOLING LUXURIOUS COMFORT - Better than human grade mattress with conforming therapeutic comfort. The combined benefits of pressure point relief, alignment support, cooler sleeping surface, less allergens and motion isolation come together to create the ideal environment for deeper and more restful sleep. HIGHEST QUALITY - Premium materials, quality construction and smart features providing many years of comfort and support with excellent value for your money. Try it yourself and you will love it too.