Patent ID: 7191482

Claim:
An apparatus configured to support at least a portion of a body thereon, the apparatus comprising: an inflatable first layer including a plurality of support zones; a second layer positioned between the inflatable first layer and the portion of the body to be supported, the second layer including a spacing structure; an impermeable sheet configured to be impermeable to fluids and moisture, the impermeable sheet disposed between the inflatable first layer and the second layer; a cover configured to couple to the impermeable sheet, the cover including a first portion positioned adjacent the portion of the body to be supported, the first portion including a moisture vapor permeable material; and a controller configured to control the pressure in each support zone of the plurality of support zones of the inflatable first layer, the inflatable first layer configured to provide a static support surface wherein a first support zone is configured to be generally pressurized at a first pressure and a second support zone is configured to be generally pressurized at a second pressure, the second pressure differing from the first pressure.