Fashion Bed Group Sleep Calm Zippered Nonwoven Box Spring Encasement with Bed Bug Defense, Queen 100% Polypropylene Imported Queen sized encasement fits up to 9" mattresses or box springs Fully surrounds box spring encasement to protect from stains Protects from bed bugs, dust mites, allergens and pet dander Constructed of 100% polypropylene Protected with a 10-year limited product and mattress warranty