Dogbed4less Orthopedic Memory Foam Dog Bed for Small to Extra Large Pet, Waterproof Liner with Heavy Duty 1680 Nylon External Cover and Bonus Replacement Cover WATERPROOF LINER + 2 EXTERNAL COVERS - This bed comes with x1 Water proof internal zipper cover to protect the memory foam, x1 Heavy Duty Seal Brown nylon external zipper cover + x1 Free bonus MicroSuede brown external case and x1 gel infused jumbo memory foam pad at 55" Length X 47" Width X 4" Thick. 1680D NYLON COVER - Removable Nylon external cover with strong zipper in gusset style and extra stitching to prolong the life of the bed, wash after wash. This heavy duty 1680 nylon cover will resists light scratching, water, hair, dirt, and odors, and can be easily wiped down or machine-washed. This 1680 Nylon cover is not a chew proof material, just sturdier and tougher than regular beds. ORTHOPEDIC SUPPORT - Top rated quality Jumbo 55"X47"X4" hypoallergenic high density 100% gel infused cooling 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. LUXURIOUS COMFORT - Our memory foams are denser and heavier compare to other pet bed because we only offer superior human grade product similar to high-end mattress store. The combined benefits of pressure point relief, alignment support, cooler sleeping surface and less allergens 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.