Blue Hill Products Hypoallergenic Bed Bug, Dust Mite, Waterproof; Premium Soft Stretch, Twin Size-39"x75"x9"-12" Depth; Box Spring Encasement Polyester unique feature-Velcro enclosed self-locking zipper Twin Size Comfort Fit-39"x75"x9"-12"; Protection from Bed Bugs, Dust Mites, and Allergens Barrier to liquids including water, urine, sweat Machine Wash/Tumble Dry Warm;"Made in the USA"