The Lenex is made from technologically advance leathers, polyurethanes and moisture transferring polyesters to keep the foot in a healthy cool environment. Moisture transfer polyester lining. Removable Aetrex polyurethane orthotic absorbs shock heel to toe. Multi-density EVA midsole. Anti-slip rubber outsole. High-tech Carboplast foot bridge provides motion control and minimizes pronation. Aetrex unique PRS insole (Pressure Relief System) allows you to easily customize the comfort and fit of the shoe by trimming the insole at the areas of pressure.