Sockwell Men's Taos Micro Socks Wool 47% / Nylon 31% / Alpaca 18% / Spandex 4% Made in the USA and Imported 47% Lambswool, 31% Stretch Nylon, 18% Alpaca, 5% Spandex Mock rib upper, arch support and mesh breather panels Cushioned sole, y-heel and classic link toe seam Machine wash warm, turn sock inside out. Tumble dry low. Do not bleach. Made in the USA