The P.R.O Matt Plus from Joerns provides you a unique option of having a non-powered air/foam support surface or an alternating pressure air therapy system in a single mattress. The P.R.O (Pressure Relief Optimization) air control technology needs no adjustments or manual inflation devices and only requires the optional ES2 controller for conversion. The P.R.O. technology valve assures that optimal pressure is maintained in four therapy zones (head, shoulder, torso and foot) regardless of the user's weight and profile. An air/foam surface is created by using a standard controller with 10 minute static and alternate cycle times. A nylon therapy pad/cover is standard on the P.R.O. Matt Plus and provides a waterproof, low friction surface that is easily maintained and cleaned. This mattress has two different functionalities that can assist with early stage levels of pressure ulcers and skin breakdown. The alternating pressure system requires the inclusion of a specialized, optional control and external hoses that attach to the mattress. This creates a four zone system with an inner air core that creates the pressure profile of a low air loss mattress. To use as a therapeutic air/foam system, simply disconnect the external hoses and the control unit to have a static sleep surface.