Big Sale ! Allergy Free Pillow Covers Dust Mite, Bed Bug -100% Cotton - King Size (2 PCS.) 100% Cotton-Bed Bug Proof Zippered Waterproof Pillow Protector-King size (21" x 37") Lock Up Total Encasement, Washable Pillow Cover Super Durable Soft Fabric High Desity But Breathable MaterialI Protects Against Allergens, Dust Mites, Bed Bugs, Bacteria, Perspiration, Urine And Fluids Prevents Bed Bugs From Entering Or Escaping