Cover system for a patient support surface

An apparatus configured to support at least a portion of a body thereon, the apparatus comprising

• a cover having an interior region,
• a base located within the interior region, the base including first and second layers, each of the first and second layers having a plurality of sections with substantially flat top and bottom surfaces such that the substantially flat top surfaces of the plurality of sections of each of the respective first and second layers are substantially coplanar with each of the other sections of the corresponding first and second layers and such that the substantially flat bottom surfaces of the plurality of sections of each of the respective first and second layers are substantially coplanar with each of the other sections of the corresponding first and second layers, at least two of the plurality of sections of the first layer having different ILD ratings, at least two of the plurality of sections of the second layer having different ILD ratings, at least some of the plurality of sections of the first layer extending over and across abutting bonded edges of at least some of the plurality of sections of the second layer, the abutting bonded edges being oriented in substantially perpendicular relation with an upper surface of the cover,
• a fiber network located within the interior region, the fiber network including a plurality of spaced-apart resilient members that are movable between a compressed position and an uncompressed position, and
• an air mover to move air through the fiber network.