Moonrest &ndash; 2 Pack - %100 Waterproof Pillow Protector - Dust Mite, Bacteria, Allergy Control - Encasement - Bed Bug Proof (King 20" x 36") 100% cotton terry top; Wicks away moisture - Designed especially for allergy and asthma sufferers / %100 Waterproof Traps microscopic particles, dust mites and pollen; lets moisture vapor out Hypoallergenic - Blocks dust mites, allergens, bacteria, mildew and mold Bacteria resistant membrane helps prevent allergies, asthma and eczema by keeping your pillow sterile Soft & Noiseless - Durable - Hypoallergenic - Zipper closure - Machine wash