AllerEase Hot Water Washable Zippered Pillow Protector &ndash;Hypoallergenic Zippered Pillow Protectors, Allergist Recommended, Prevent Collection of Dust Mites and Other Allergens, King Sized, Pack of 2 47% Cotton/53% Polyester Imported COMPLETE ALLERGEN PROTECTION: If you wake up congested, it could be allergens in your pillows. Our hot water washable pillow protectors offer complete barrier protection, blocking dust mites, pet dander and other common household allergens. BREATHABLE COTTON: Made of 100% breathable, allergy proof fabric cotton, these allergy protection pillow covers are soft to the touch and do not retain heat, so you can get a cool, comfortable and allergy-free nights sleep! EXTEND PILLOW LIFE: Fully encasing your pillow with a durable and comfortable zippered protector not only protects against household allergens, it extends the life of your pillow by keeping it fresh and clean. HOT WATER WASHABLE: These pillow covers are able to be washed in hot water to kill germs and bacteria. Machine wash hot, only non-chlorine bleach when needed; Tumble dry low heat; Remove promptly; Iron low LEADING BRAND OF ALLERGEN BARRIER BEDDING: All AllerEase products provide natural allergy relief, are allergist recommended, and have a 10-year limited warranty. Customer satisfaction is important to us.