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The Darn Tough Coolmax Boot Sock features Coolmax® comfort and the perfect amount of cushioning resulting in mile after mile durability. This naturally antimicrobial sock is an all-weather performance sock and is made of 35% Coolmax® Polyester, 34% Nylon, 28% Acrylic, 3% Lycra® Spandex and 1% other fiber. The sock features a performance fit, fine gauge knitting, fast action wicking and True Seamless™ for an ultra-smooth, invisible feel. All Darn Tough socks are made in Vermont, USA and carry a lifetime guarantee.
