Allergy Armor Allersoft Cotton Blend Mattress Cover- Queen 9" 60% Polyester / 40% Cotton Blend Breathable, Membrane-Free Fabric Effective Protection against Dust Mites, Dust Mite Feces & Other Allergens Lasting Allergy Relief with 5 year warranty Pore Size of 3.9 microns, Luxurious 246 Thread-Count