Carhartt Men's Traditional All-Season Cotton Crew Work Socks 73% Combed Cotton, 17% Nylon, 9% Polyester, 1% Lycra Spandex Made in US Machine wash 74% Cotton, 16% Nylon, 9% Polyester, 1% Lycra-Spandex Crew length Midweight Machine wash warm with like colors. tumble dry medium, remove promptly. do not iron. do not dry clean. USA