Avia - A158m (White/Submarine/Performance Grey/Signal Orange) - Men's: Built for a wide variety of activities including, light running, walking, weight training, cardio machines. Leather, synthetic leather and mesh upper. Removable molded EVA sockliner. Compression molded EVA midsole. Cantilever(R) centers the heel over a concave sole. The concave sole acts like a trampoline to soften impact, stabilize the heel and provide increased energy return. Anatomical Cradle(R) literally cradles the foot to allow maximum shock absorption first by the shoe and then the natural fat pads of the foot. Two piece solid rubber outsole with TPU shank.