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. 98% Polyester, 2% Spandex Imported Pull On closure Machine Wash Shoe Size: Womens 6-10 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 foot for a better fit