Deluxe Bed Bug Proof Box Spring Encasement, FULL - LIFETIME WARRANTY Surrounds and protects the mattress and Box Spring on all 6-sides against allergens, dust mites, bed bugs, bacteria, perspiration and fluids, with Velcro Zipper Seal Smooth Polyester top layer, soft and comfortable under sheets Pest industry approved Fits mattress up to 18 Inch, Machine wash and tumble dry for easy care LIFETIME WARRANTY