The Super Soft Round Sherpa Dog Bed is filled with Hypro-Loft, an exclusive blend of virgin and recycled fibers, which provides unmatched loft by not shifting or matting. Machine washable, the ultra bed has a sherpa top and cotton or nylon bottom which removes for easy cleaning. Cover is polyester/cotton blend and is washable and dryable as often as you need. Super Soft Round Sherpa Dog Bed Sizes: Medium: 36 x 36 inches Large: 42 x 42 inches X-Large: 52 x 52 inches Poly-Suede is quality brushed microsuede fabric, heavy duty 12 oz. 100% polyester with added backing for strength and durability, washable and easy care, comfort at its finest, add a touch of luxury with this top-rated microsuede in a collection of colors to match any home decor.