Patent ID: 7870680

Claim:
A support liner comprising: a compressible base having a base surface; a plurality of parallel rows of alternating first compressible protrusions and second compressible protrusions protruding in a direction away from the compressible base; wherein bases of adjacent first compressible protrusions and second compressible protrusions in a row are interconnected at the compressible base at interconnections at a height above the base surface of the compressible base such that the interconnections are compressible and prevent column buckling of the first and second compressible protrusions; wherein the compressible base forms a common base portion for the first compressible protrusions and the second compressible protrusions such that the first compressible protrusions, second compressible protrusions and compressible base form a single continuous piece; and wherein the plurality of parallel rows are staggered such that an interconnection in one row is adjacent one of the first and second compressible protrusions in an adjacent row.