The Serta Perfect Sleeper ProChill Protector Bundle is the smart solution for protecting and maintaining the cleanliness of your pillows and mattress. The bundle includes two pillow protectors (one for the twin bundle) plus a mattress encasement to ensure all aspects of your sleep space are protected. With cool-to-the-touch, 90% nylon, 10% spandex fabric, the protectors are breathable allowing air to flow and not trap unwanted heat-great for those who are run warm. Microban antimicrobial protection keeps your mattress and pillows fresh and clean by protecting against odor-causing bacteria. The mattress encasement is equipped with a quiet waterproof barrier that keeps your mattress safe against sweat, spills, and accidents. With Zip’N Wash technology on the mattress encasement, it allows for the top layer to unzip easily for laundering and effortlessly zips back in place saving you time and effort. The mattress encasement fits mattresses up to 15 inches deep. The pillow protectors fit any standard to queen-size pillow or king-size pillow with the king bundle. Outfit all the mattresses in your home with this protector bundle that is available in twin, full, queen, and king sizes. Machine washable for easy cleanability. Coordinate with other Serta-branded products such as a bed pillow for a complete look (sold separately). Not just sorta comfortable, Serta comfortable. What is included in the bundle? With the Serta Perfect Sleeper ProChill Protector Bundle, you will receive 2 pillow protectors (1 for the twin bundle) and a mattress encasement. What is the difference between a mattress encasement and a mattress pad? A mattress encasement is designed to preserve your mattress by protecting against damage. Mattress pads are generally used to add cushioning and comfort. Is this protector bundle machine washable? Yes, this protector bundle is machine washable. Machine wash warm. Only non-chlorine bleach if needed. Tumble dry medium. Do not iron or dry clean. Is this product waterproof? Yes, this protector bundle is waterproof due to a quiet, waterproof barrier. What mattress depth can this mattress encasement fit? This mattress encasement is able to fit mattresses up to 15" deep. How do you install a zippered mattress protector? First, you will need to remove all bedding including mattress pads and toppers. Second, stand the mattress up vertically, lean against a wall for added support. Third, align the corners of the protector with the top corners of the mattress. Slowly and evenly pull both sides down the mattress. Last, return the covered mattress to the base and adjust the protector as needed. Zip cover to complete.