Fit and Design: Quarter running socks Optimal cushioned design delivers impact resistance to keep you moving forward on every run Reinforced microfiber mesh ventilation panels enhance breathability Leverages medium volume construction Hand-linked seamless toe and sensitive rib top maximizes comfort Non-constricting compression sock bands deliver no-slip security Locks in the heel and midfoot while leaving your toes room to move Extra-deep heel pocket ensures the perfect fit Technology: Dynamix(R) moisture wicking fibers help keep your feet cool and dry mile after mile Signature V-Tech Arch Support System provides a structured fit that perfectly matches the contours of your foot and helps prevent blistering