cotton Imported Machine Wash CONTENT: 36-40% Modal from Lenzing, 36-40% Combed cotton, 16-24% Polyamide, 1%Polyester, 2% spandex, 1% Lycra from Invista FUNCTION: Moisture Wicking Men's normal thickness office dress crew sock DESIGN: Reforced heel and toe; Comfortable seamless Toe FITTING: M: Shoe size for Men 6-8.5; L/XL: Shoe size for Men 9-13 CUSTOMER SERVICE: If you are not satisfied with our socks, please contact us by email and we will respond within 24 hours. You can request to return items within 90 days of receiving it