Aller-Ease Microfiber Dust Mite Allergy and Bed Bug Barricade Mattress Protector Cover, Twin Mattress cover for Twin beds protects against dust mites and bed bugs Made of polyester microfiber laminated to polyurethane Designed to help allergy and asthma sufferers; lab-tested to prevent bed bugs from biting through the fabric Recommended by allergists; backed by Good Housekeeping Machine or hand wash in cold; imported