Military Issued OD Green Anti-Microbial Boot Socks Condition-NEW! Comes in a 4 Pack SizingMedium (10-13)Large (13-15) These socks eliminate odors, regulates temperature, transports moisture, and are anti-static Material-82.5% Cotton, 10% Nylon, 5% Spandex, 2.5% Silver Plated Nylon Made in the USA!