KOPEKS - Orthopedic Memory Foam Dog Bed with Pillow Great for pets with arthritis or joint and muscle problems Made out of 100% memory foam. Size: 25-Inches x 20-Inches x 3.5-Inches thick Memory Foam and 1.5 Inch thick Pillow. Similar to therapeutic foam found in high end mattress stores. KOPEKS is a registered trademark and best-seller of Pet Accessories.