Sockwell Women's Sunrise Socks 35% Stretch Nylon/ 30% Merino Wool/ 30% rayon Rayon/ 5% Spandex Made in the USA and Imported Turn Welt Top Fabric Type: 35% Stretch Nylon/ 30% Merino Wool/ 30% rayon Rayon/ 5% Spandex; Import Designation: USA Turn Welt Top Keeps Your Socks in Place Flat Toe Seam for Comfort Y-Heel Shape keeps Sock in Place Machine wash warm, turn sock inside out Tumble dry low Do not bleach