Use this special two-layer bedbug mattress and pillow protector to keep bugs out and your health safe. This six-sided mattress cover is coated with a total bedbug, dust mite and allergen blocker. A triple-seal closure system features an inner flap, hook-and-loop seam, plus zipper-making them easy to put on, but impermeable to bedbugs! Polyester. Imported. Machine washable. Fits mattresses up to 21" deep.