Keep your bed fresh with the Linenspa Box Spring Encasement. With advanced aqua tight technology, this 100% waterproof box spring protector provides reliable protection from all liquids, spills, and accidents. Offering total 360? protection, this box spring protector with zipper closure safeguards all six sides of your box spring from stains and accidents. A 100% polyester bed protector keeps your sleep environment fresh and clean. Machine washable and dryer safe.