MATTRESS ENCASEMENT Stretchable to fit 9" depth bed up to a 12" depth to fit a pillow-top mattress. MATERIAL Polyester fabric fits the mattress easily while providing comfortable feeling ZIPPERED COVER 3-sided Interlocking zipper with a stitched Velcro flap to ensure security. 100% WATER RESISTANT PROTECTION Mattress encasement protects your mattress from unwelcome spills and keeps your mattress clean and safe. Waterproof material protects from all leaks and spills that may occur (blood stains, urine stains, sweat stains). BED BUG PROTECTION Luxurious mattress covers offers ultimate comfort and protection for your mattress. Zipper closure completely seals off the mattress from bed bugs that are trying to enter or leave your mattress. SIMPLE TO CLEAN Machine Washable in temperatures below 140 degrees. Never use bleach.