The perfect complement for your work boots, this Carhartt sock features moisture-wicking properties, abrasion-resistant material in heel and toe and odo-fighting fabric.. . . . . FastDry wicks away sweat. Fights odor. Temperature-regulating wool blend. Heel arch toe and leg cushioning. Achille's lock reduces heel lift. Enhanced heel pocket for secure fit. Ribbed channels improve ventilation on leg. Abrasion-resistant yarns in heel and toe. 32% Poly/31% Wool/22% Cordura Nylon/12% Nylon/ 3% Elastane. Machine wash. Imported.