Joerns | PrevaMatt Series Foam MattressesJoerns PrevaMatt Series Foam Mattresses Pressure Injury Prevention for Safer, More Comfortable Patient Care The Joerns PrevaMatt Series Foam Mattresses, available from Alto Med Supply, are clinically designed to deliver superior comfort, safety, and pressure injury prevention for patients in hospitals, long term care facilities, and home healthcare settings. This advanced line of therapeutic foam mattresses helps prevent and manage up to Stage 2