Allerease Platinum Zip-Off Top Waterproof Mattress Protector King Size, White ALLERGEN BARRIER: Purely Clean Pro technology blocks 99.9% of unhealthy household allergens from passing through the fabric and collecting in your mattress. 360 DEGREE ZIPPER: On the top of the encasement allows for easy installation and removal of the top while anchor bands hold the encasement to the mattress when the top is removed. WATERPROOF: Soft, quiet top fabric is backed by a waterproof layer, protecting your mattress from unexpected spills stains. LUXURIOUS PLUSH TOP: Deluxe circular knit fabric delivers superior comfort. TEMPERATURE BALANCING: Wicks moisture when you?re hot and insulates you when you?re cold. EASY CARE INSTRUCTIONS: Machine wash hot, wash separately, only non-chlorine bleach when needed, tumble dry on delicate/low heat 60+-6 C or 140+-10 F. Max dryer exhaust temperatures vary by brand. It is recommended that the lowest dryer temperature be utilized and that the item be removed when it is dry rather than when the dryer stops running, do not iron.