Fashion Bed Group QD0228 Nonwoven 2-Piece Zippered Box Spring Encasement with Bed Bug Defense, Split Queen 100% Nonwoven Fabric Imported Protects box spring from bed bugs, dust mites, allergens and pet dander Complete surround box spring encasement to protect from stains Machine washable Constructed of 100-Percent polypropylene Provides a clean and hygienic sleeping environment