Nike Dri-FIT Quarter 3PK 931 L 38% Cotton, 34% Nylon, 26% Polyester, 2% Spandex. Dri-FIT fabric wicks sweat to help keep you cool and comfortable Supportive fit with arch compression Made with partially-recycled material Left/Right specific design for a better fit Large: Men's 8-12, Women's 10-13