The Active Air 4 is a lightweight, easy to use Overlay that is placed on top of an existing foam mattress. Featuring COMFORT CONTROL and offering a suite of other features, the Active Air 4 caters to users considered to be "At Risk" of Pressure Injury. An ideal solution for Home Care or Facility environments. Semi Digital Pump - This simplified solution is easy to navigate and operate AutoLock - Control panel automatically locks after 30 seconds, preventing accidental mode changes Comfort Control Dial - Simplified pressure dial allows easy adjustment to suit user needs Sleep Quality - Innovative pump technology reduces noise and vibration, for a quieter sleep environment Infection Control - Welded seams and zip protection prevent fluid and bacterial ingress into the system Skin Microclimate - The multi-stretch cover reduces shear and offers a high MoistureVapour transfer rate (MVTR) Workplace Health & Safety - The power cord is retained within the overlay eliminating it's potential as a trip hazard Pressure Care Outcomes - Intelligent cell design maximises the duration of pressure reduction in the alternation cycle Laundry & Hygiene - Machine washable cover at 95º to achieve superior sanitising