Jasonwell Rectangle Super Warm Soft Plush Dog Bed,Puppy Pets,Dogs and Cats Cushion Pillow Mat with Removable Washable Cover REMOVABLE COVER---Zippered bottom for easy removal and easy wash RESTUFF---Zippered bottom allows you to restuff the bed with sweaters, old clothes, towels, and any other soft material COMFY & COZY---Very soft plush cover. Inner stuffing bag is filled with super high loft polyester fiber fill(Do not wash inner stuffing bag) WATERPROOF BUTTOM---Buttom with water-proof, moist-proof coating. External Dimensions: S: 19 X 14.5 X 6 inches; M: 27.5 X 21.5 X 6.6 inches; L:35 X 27.5 X 7 inches. Internal Dimesions: M:20 X 15 inches; L: 29.3 X 21.6 inches. Please add extra 5-8" to the length of your dog in favorite sleeping position to confirm the bed size.