Style 38405 aluminum, 38403 ice castle, or 39157 burnt olive/black. UPPER / LINING: Barefoot strobel construction offers flexibility and comfort, Synthetic leather and air mesh upper, Water-friendly, quick dry materials with drainage ports in thetoe and heel to shed water, Synthetic protective overlay toe bumper provides durability and protection, Synthetic leather rear foot sling provides stability, Integrated footbed treated with Aegis® antimicrobial solution resists odor. MIDSOLE / OUTSOLE: 4 mm compression molded EVA midsole cushions, 0mm ball to heel drop keeps you connected to your terrain, Wash as needed in cold water, gentle cycle and air dry, Vibram® Aqua Glove Sole / TC-1 Rubber.