Goodhew Women&#39;s Padua Sock, Black, Small/Medium Wool 66% / Nylon 29% / Spandex 5% Made in the USA and Imported 66% Merino Wool, 29% Stretch Nylon, 5% Spandex Arch Support True rib construction & flat toe seam Machine wash warm, turn sock inside out. Tumble dry low. Do not bleach. Made in the USA