HomeCrate Natural Sleep Defence - Standard Water-Resistant/Bed Bug Proof Mattress Encasement 78" 80' King, PROFESSIONAL QUALITY PROTECTIVE BEDDING; Water Resistant Barrier on all 6 sides of mattress; Independently lab-tested to be 100% Bed Bug Proof FIBER CONTENT; 100% Synthetic, non-woven stretch knit fabric is cool and comfortable, Breathable water resistant membrane won't trap heat while you sleep, and can be easily wiped clean and wont stain, EASIEST MATTRESS PAD; 3 Sided zippered mattress cover easily stretches to fit any mattress depth from 9" to 15" ALLERGEN PROTECTION; Help ease Asthma and other Respiratory conditions by blocking allergens as you sleep, it protects against Dust Mites, Perspiration, Urine & other fluids too. CARE INSTRUCTION; Machine wash up 140 F. Do not bleach or use harsh detergents. do not dry clean. Tumble dry medium heat.