Made in USA Made especially for women. The softest wool running socks on the market. Merino wool, over-the-calf athletic socks. 57% Ultra fine Merino Wool, 37% Nylon, 6% Spandex Lifetime Guarantee. Manufactured in the USA Ultra Light Weight merino wool wicks sweat and keeps your feet cool Great for exercising, running, hiking, camping, biking, travelling, flying, or for jobs that require you to be on your feet all day.