Ollieroo 4&rdquo; Memory Foam Orthopedic Dog Bed for Small Medium to Large Dog with Durable External Cover and Waterproof Liner 40" x 35" x 4" 100% Solid Therapeutic Memory Foam Pad - 4 INCHES High memory foam dog bed offers the perfect combination of support and comfort in balance with superior durability while ensuring the body is properly aligned without painful pressure points that can lead to tossing and turning 2 Layers of zipper Covers protection - Waterproof internal zipper cover and flannel external cover with hidden zippered eyelid design plus extra stitching boasts longer lasting quality and easy to wash High quality Memory Foam never loses its shape, providing many years of cozy comfort in relieving the pain of arthritis, joint and hip dysplasia. It can also contours to the body for true orthopedic support. Quality guarentee - Non-toxic, Our products are certified to be free from harmful substances; Unlike other brand multi-layer glued partial memory foam, Ollieroo offers whole 4 Inches 100% memory foam pet bed to promote better sleep, healthy joint and long lasting Dimensions: 40 inches L x 35 inches W x 4 inches H; Weight: 13 pounds; Great for Medium & Small dogs