Legacy 20 Alternating Mattress – Mattress Replacement Available Single & King Single  Designed for Stage III (medium/high risk)  On / Off Switch; Adjustable Pressure / Firm Control  Alarm Reset and Static Control  Static and Alternating Control Button Cycle Time Selector Touch Panel  Low Air Loss Cell Mattress System  CPR Emergency Valve   20 cm Cell Height an 106.5cm Mattress Width  Nylon PU cover (two-way stretch fusion)  Replaceable air cells - comes with one Air tube replaceable Maximum load capacity of 200kg