Moisture Wicking Polypropylene throughout the sock to pull sweat away from the skin. StaCool ® Moisture Wicking nylon to the foot of the sock to ensure the feet stay dry. Precision knit Endurall ® into the heel and toe making holes a “thing of the past”. Foot Top Ventilation Shafts on the top of the foot to allow air flow which helps evaporate the moisture being pulled from the foot. Arch and Ankle Support Zones to keep your feet comfortable and stable thru the whole game. Select Terry to the Achilles Zone for added protection.