Two All-Season Work Socks: The White Work Sock is 77% combed cotton, 20% stretch nylon, and 3% Lycra spandex. The Gray Work Sock is 71% combed cotton, 20% stretch nylon, 6% polyester, and 3% Lycra spandex. Both socks feature the comfort of Lycra-reinforced welt tops, flat toe seams, and cushioned soles. And the strength of a nylon-reinforced heel and toe.For over 115 years, Carhartt has manufactured premium workwear known for exceptional durability, comfort, quality of construction, and fit that you can feel in the fabrics and see in the performance.