Unique Design: Our mattress cover encasement is a perfect alternative for traditional bed skirt, and a good way to hide your box spring mattress and make your bed look neat. Perfectly Fits Low Profile Box Spring: Not too tight or too loose, just perfectly fits low profile box spring which is up to 5 inches thick. 100% Waterproof Protection: The 6 sides with thick PU inside make sure your box spring away from liquids spills. High-quality zipper: To avoid the zipper getting stick or dislodged when changing the mattress encasement, we use the best zipper on this mattress protector. Also, the quality of stitches you can trust which will not popped and ripped for a long time. Easy Care: Machine wash in cold water with things in similar color; Tumble dry low; Do not bleach. Protect your mattress and box spring with our Biloban Twin Mattress Protector, a waterproof, low-profile encasement that fits perfectly on mattresses up to 9 inches deep. This breathable protector features a smooth, 6-sided design that wraps around your box spring, keeping liquids at bay and providing a neat, finished look. The high-quality zipper ensures easy on and off, while the durable, hypoallergenic materials ensure a comfortable night's sleep. Machine washable in cold water and tumble dry low, this protector is easy to care for and maintain. Upgrade your bedding today with our Biloban Twin Mattress Protector.