Coyote Brown USAO Anti-Microbial Socks 3Pair Made in USACoyote Brown USAO Anti Microbial Socks 3Pair Made in USA The silver fiber incorporated in these Antimicrobial Boot Socks, is a broad spectrum anti microbial yarn that actually touches the skin, kills bacteria on contact, completely eliminates all foot odor, offers enhanced blister resistance, moisture transportation, temperature management, and anti static features. FEATURES 2. 5% Silver plated Nylon, 82% Cotton, 10% Nylon, 5. 5% Spandex Three pairs