Fit and Design: Low cut running socks Reinforced microfiber mesh ventilation panels enhance breathability Contoured low-volume construction ensures a perfect fit Delivers ultimate support in both arch and ankle with enhanced elastic grip construction plus a microfiber arch band Triple-Y heel design creates a more formed, extra-deep heel pocket Hand-linked, seamless, reinforced microfiber toe and high heel tab helps prevent the sock from slipping and minimizes exposure to blisters Enhanced elastane provides additional no-slip security Technology: Dynamix(R) moisture wicking fibers help keep your feet cool and dry mile after mile