This Lands' End Rectangular Canvas Dog Bed Cover provides a comfy bed for your four-legged friend. PRODUCT FEATURES Heavy-duty 18-oz. cotton canvas Zips off for easy machine washing Finished with piping trim and has an easy-sliding, reinforced zipper to conveniently remove the cover Filled with soft and lofty polyester in a long-lasting, extra-tough polypropylene shell Tough, tightly woven twill to really last and to stand up to claws Use with inserts (sold separately) SIZING Small: 20" x 28" x 4.5" Medium: 28" x 41" x 4.5" Large: 35" x 48" x 4.5" Extra Large: 39" x 52" x 4.5" PRODUCT DETAILS Machine wash Model no. 417270, 417271, 417272, 417273 DOG BED NOT INCLUDED Cotton canvas Weight: 18-oz.