20" X 54" Zippered Body Pillow Protector - Dust Mite & Anti Allergy Pillow Encasement white Size 20x54 Mada in USA - Removable Washable Size is L 54" X W 21" with Easy on-off Zipper (fits 20" x 54") Bacteria resistant membrane helps prevent allergies, asthma and eczema by keeping your pillow sterile Traps microscopic particles, dust mites and pollen; lets moisture vapor out Durable 100% Polypropylene non-woven fabric with polyethylene lamination - Hypoallergenic