Dogbed4less Internal Duvet Case Waterproof Zipper Dog Bed Cover for Small Medium to Extra Large Pad Insert Stuffing Pet Bed - Cover Liner Only Quantity = 1 Water Proof internal zipper cover to secure the memory foam pad for Dogbed4less's brand memory foam pad bed product or any similar size pet bet. This 55"x41" flat internal cover will fit on perfectly on 55"X37"X4" Dogbed4less memory foam pad product which sold separately. The waterproof liner is designed to protect the interior of your dog's bed from accidents and other wet messes. This liner also helps protect your dogs foam insert from household allergens, dust mites, mold, mildew, and that wonderful wet dog smell. Dogbed4less Internal cover made by stronger and heavier Taffeta / Nylon fabric compares to others with low-cost lightweight fabric. Extra stitching and coating to prolong the life of the cover. This listing is for 59"x41" flat internal cover only without an insert. Recommended to hand wash only with mild detergent and let it air dry naturally or wipe it off with damp paper towels. Please carefully measure your bed size correctly before placing the order. Watertight, Stain and Dirt-resistant on both sides to temporarily prevent any liquids leak into the insert / stuffing under normal uses. Recommended using with our gusset style 55"X37"X4" external cover which sold separately here at Amazon store.