Add RecipientSpenco PolySorb Men's / Women's CrossTrainer Insoles absorbs shock, reenergizes feet and reduces friction. A contoured layer of lightweight polyurethane bonds to a closed-cell nitrogen-injected Spenco material to help cradle the heel and support the arch. Added cushioning in the heel strike zone and forefoot area help protect the back and front of the foot during any activity. Awarded the Seal of Acceptance by the American Podiatric Medical Association.