These heavy-duty crew socks have been designed and built specifically for the hardest workers. These 15" white socks are made from a blend of 95% combed cotton and 5% stretch nylon, providing the comfort and breathablity of cotton with the comfortable fit of nylon. Featuring a heavyweight cushioned fit, a stay-up mock rib leg with welt top and an extra-smooth toe closure, these socks are among the most comfortable on the market.