100-Percent Waterproof Barrier on all 6 sides of mattress; Independently lab-tested to be 100-Percent Bed Bug Proof * Zippered mattress cover stretches to fit any mattress depth from 10" to 18" * Extra-soft Polyester knit fabric is cool and comfortable; Breathable waterproof membrane won"t trap heat while you sleep * Help ease Asthma and other Respiratory conditions by blocking allergens as you sleep * 5-Year Limited Manufacturers Warranty