Sockwell Women's Genie Medallion Socks 32% Stretch Nylon/31% Merino Wool/31% Bamboo Rayon/6% Spandex Made in US Arch support and spandex throughout ensure an uncompromising fit Seamless toe seam, turn welt top, and Y-heel constructions provide superior comfort Super fine merino wool provides natural thermoregulation and moisture management