Thorlos Women's  LRCM Light Running Thin Padded Low Cut Sock 69% Exclusive THORLON acrylic , 23% nylon, 5% spandex, 2% polyester, 1% Other Fiber Machine Wash Padding Level: Thin Cushion Key Benefit: Thorlos Protection = Maximum Comfort Guarantee - Your feet will feel better or your money back! Proudly MADE in the USA | North Carolina Women's specific design includes extra stretch yarn in the ankle and arch, a smaller heel pocket and a smaller custom toe box for a superior fit Constructed with THORWICK COOL fibers for superior moisture-wicking for drier, cooler feet. Cushioned arch for a better fit, more support and more comfort Low profile toe seam wont rub or irritate feet Padding in the ball and heel absorbs shock and is specifically engineered for protection and comfort while running Fiber Contents: 70% Exclusive THORWICK acrylic, 28% nylon, 2% spandex