Spenco Ironman Train Insoles Insoles : The TOTALSUPPORTA(R) footbed of the Spenco Ironman Train Insole is the optimum interface between your feet and the ground. These replacement insoles are specifically designed for the excessive demands of training. A low-friction top cloth helps keep your feet cool, prevent blisters and even reduce odor. 3-POD(TM) Modulation System helps prevent overpronation. EVA/TPR blended midsole provides increased durability and cushioning. Rigid Arch Support promotes an efficient stride. Built with a deep heel cup.