Upholstery fabric. Premium quality materials to reduce wear and tear. Spine Support: Bolster on the pet beds allow for dogs to rest their head and to help straighten their spines. Premium Materials: The dog bed is stuffed with a Premium High Loft Polyester Fil and is fully machine washable. Gentle cycle, air dry. Waterproof Denier Base: Base of round bagel bed is made of waterproof 300/600 Denier for any unwanted accidents or spills. Dimensions: Approximately 40"L x 29"W x 9"H. Dogs 40 to 70 pounds recommended.