Mattresses are very expensive and can be protected when using our Bed Guard Ultimate Series Mattress Protector. Allergens, mold, pet dander, urine, water, dust mites are all unable to penetrate our unique barrier. This membrane layer allows air to pass freely through the material while filtering everything else. In addition, this unique membrane barrier is totally soft and breathable unlike older vinyl covers that cause sweating and crackle under the sheets so you sleep comfortably. Buy with confidence knowing each cover includes our 20 year premium warranty. We are proud to offer only made in USA products and we certify that no PVCS, phthalates, antimicrobials, fire retardant or latex is used in our products. The covers are 100 Percent machine washable if soiled and can withstand up to 200 degree drying temperatures. Expandable fitted sheet style elastic skirt insures a perfect fit for mattresses ranging in depth from 12 to 18 inches.