Spenco Polysorb Cross Trainer Insoles triple the benefits of normal insoles. This award winning insole absorbs shock, reenergizes feet and reduces friction. A contoured layer of lightweight polyurethane bonds to a closed cell nitrogen injected Spenco material cradles your heels and supports your arches. Additional cushioning in the heel strike zone and forefoot area of the insole help prodect the back and front of the foot during various activities. The four way strech nylon reduces heat build up caused by friciton, helping you avoid blisters and calluses on both the heel and bottom of the foot. The Spenco Polysorb Crosstrainer Insoles were awarded the Seal of Acceptance by the American Podiatric Medical Association.
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