Under Armour brand mission is to make all athletes better through passion, science and the relentless pursuit of innovation. Today's athlete demands a sock that not only represents the look and feel of the brand, but that simultaneously provides useful, technical attributes bridging the gap between style and functionality. 96% Polyester, 3% Spandex, 1% Other Fiber Imported Pull On closure Machine Wash Shoe Size: Womens 6-9 Ultra-thin, lightweight construction for a barely there feel Breathable material wicks sweat and dries fast Embedded arch support reduces foot fatigue Fitted heel contours around your foot for a better fit