thorlos Women's Lite Running Thin Padded Crew Socks, 70% Acrylic, 27% Nylon, 3% Other Fibers Made in US No Closure closure Machine Wash Fiber Contents: 70% Exclusive THORWICK acrylic, 27% nylon, 3% elastic Impact Protection: Thin/light-weight padding in the ball and heel protects weight-bearing areas of the foot Constructed with THORWICK fibers for superior moisture-wicking for drier, cooler feet. Made in Statesville, North Carolina, USA 30 Day Guarantee: Thorlos feel better than ordinary socks. If you do not agree, send the socks and your receipt to Thorlos for a full refund.