Patent ID: 8813286

Claim:
A mattress comprising: an innerspring including a plurality of springs, the springs arranged in rows, wherein some of the springs are perimeter springs providing an outer perimeter of the innerspring, each of the springs extending between first and second points to provide a first spring rate in a first direction; a first polymer fiber structure provided between the first and second points, the first polymer fiber structure including fibers interlinked with one another to provide a second spring rate in the first direction, wherein the first polymer fiber structure directly contacts at least one spring in a first row and at least one spring in a second row adjacent the first row; and a second polymer fiber structure arranged on an outer side of the perimeter springs, the second polymer fiber structure comprising directionally oriented fibers, the directionally oriented fibers oriented along the first direction, the second polymer fiber structure providing an increased spring rate relative to a polymer fiber structure comprising only randomly oriented fibers.