Duray Men's Work Socks Made of Wool 3 Pack Style 169-C Size 10-13 Gray 50% Wool, 25% Acrylic, 20% Nylon and 5% Other Fibers Superwash Treatment, Superstretch and Medium Weight A warm, medium weight sock for cold weather The original red striped work sock with ribbed cuff to keep sock in place Made in Canada