Designed for use in Nursing Homes, Hospitals, and Institutions. The inner core is a high density, fire-retardant polyurethane foam that is covered with an anti-microbial, fire-retardant material meeting Federal Flammability Standard 16 CFR 1633. The mattress is closed with a self-ventilating zipper, and can be special ordered for use in prisons and psychiatric areas utilizing an inverted lock-stitch closure.