Great double layer running socks. $8 per pair. Inner layer is made of smooth, undyed, hydrophobic Dri-WRIGHT II™ polyester, nylon and Lycra® spandex to maximize moisture wicking for cool, dry feet Outer layer of Dri-WRIGHT II polyester, nylon and Lycra spandex and mesh weave enhances moisture control and airflow Interaction between inner and outer layers absorbs friction and shearing forces to prevent blisters Mesh panel across the top of the foot allows maximum wicking action; arch braces support feet Made in USA. (Inner layer) 70% polyester/27% nylon/3% Lycra spandex