Dogbed4less Internal Duvet Case Breathable Waterproof and Water Resistant Zipper Dog Bed Cover for Small Medium to Extra Large Pet Bed Pillow - Cover Liner Only Quantity = 1 Waterproof / Water resist internal zipper cover 59"X41" (FLAT) to secure the existing Dogbed4less brand pet bed stuffing for XXL 55"X37" pillow. The listing is for Cover only without stuffing or insert. This size of the cover is also design to fit 6-8 standard or queen size human bed pillows or other brands with similar size pet bed. Internal zipper cover is water proof fabric on top side and breathable water resist on other side (bottom) to create an air circulation into the stuffing and reduce odor. Please use the brown color side on the top according to the label to prevent any liquids entering to stuffing and prevents the growth of allergens. Great for older dog with bladder problem. Dogbed4less Internal cover made by stronger and heavier Taffeta / Nylon fabric compare to others with low-cost light weight fabric. Recommend to hand wash only with mild detergent and let it air dry naturally. This listing is for a internal liner case only with no insert or stuffing. The internal zipper cover allows secures the stuffing from liquids, bacteria, allergens, mold and dust mites. Breathable cover bottom side (Blue Color) will able to circulate the air in and out to the pillow stuffing while the cover top size is waterproof (Brown Color). Recommended to use with our gusset style 55"X37"X4" external cover which sold separately here at Amazon store.