Silver Tails 58303  Rectangular Bed Topper, Large/Extra Large Premium Rectangular Pet Bed Cover with Charcoal Insert Protective: Machine Washable Waterproof Cover Relieves: Joint & Increases Flexibility Purifies: Your Pet's Environment with Bamboo Charcoal Fibers. Absorbs: Dampness & Eliminates Odors. Size: Large / X-Large. Dimensions: 45" x 35"