Patent ID: 8491056

Claim:
A cushion, comprising: first, second, third, and fourth faces, the third and fourth faces are mirror images of each other; first and second seating surfaces, the first and second seating surfaces are mirror images of each other; first and second seating surface cover layers, the first seating surface cover layer located on the first seating surface, and the second seating surface cover layer located on the second seating surface, the first and second seating surface cover layers being the same size and having an area that is less than the area of either the first or second seating surface; a plurality of adjacent, substantially coplanar firmness zones, each zone having a uniform firmness throughout, the positioning of the firmness zones relative to each other creating a firmness gradient spanning from the first face to the second face of the cushion, wherein the first firmness zone is firmer than a plurality of middle firmness zones, and the plurality of middle firmness zones is firmer than the third firmness zone; an integral cushion cover layer that at least partially envelopes the cushion.