The unique silver-plated nylon carefully woven into this sock is a broad spectrum anti-microbial yarn that touches the skin and kills bacteria on contact. This completely eliminates all foot odor, offers enhanced blister resistance, excellent moisture management, and temperature management. These socks feature a blend of 82% cotton, 10% nylon, 5.5% spandex, and 2.5% silver plated nylon. Skillfully crafted right here in America. Anti-static. Machine wash with like colors. New condition. Genuine US Military Surplus. MADE IN USA.