Columbia Master of Faster Low Synthetic upper with mesh panels for breathability 3D Techlite heel system provides stabilizes the foot over the midsole for protection on terrain Contour Comfort 1D footbed with AgION anti-odor treatment Techlite molded midsole for lightweight cushioning and comfort Non-marking Omni-Grip dual rubber compound with a rugged trail design provides traction on wet surfaces as well as dry