Feetures! Socks :: Eliminate painful blisters and experience pure running comfort with Feetures! patented Coolfeet Ventilation System and seamless PerfectToe™. The Coolfeet Ventilation System provides unique 360° mesh ventilation for maximum air flow and breath-ability. Plus, power bands of Lycra® soothingly hug the foot and keep socks in place. Feet stay cooler, drier and fresher - thanks to CoolMax® with freshFX™.