Size Medium. Dimension 36"x29". Color Green. Filling Materials: High Density 3 lbs grade shredded Memory Foam with Premium Soft PolyFiber Fill. Bed will keep shape after many uses and not go flat. 2 Layers of Protection: Top waterproof bottom water resistant zippered inner case to protect from water and an Outer Tough Strong Green Canvas Flat style design with Metal Pull-tab Cover for Comfort and Security. Great for dogs with joint pain, muscle pain, hip dysplasia, and arthritis. Covers can be unzipped and removed for a fast and convenient cleaning time. Perfect for Medium or Small dogs that are looking for a great and relaxing comfortable sleeping environment. Memory foam are known for their contouring ability and will cradle your pup in comfort and provide a deep and quality sleep. Our pillow bed is very cushioned and will help your pet enjoy a deep sleep to keep your pet happy and healthy.