Copper Sole Men's Merino Wool Thermal Over the Calf Sock Navy 6-12 Copper Sole 1 Pair Outdoor Thermal Over-the-Calf sock is knit with copper ion yarn that naturally eliminates harmful odor causing bacteria and improves foot appearance. Contains 21% Merino Wool for added warmth and comfort. The full cushion sole absorbs shock and a smooth toe seam provides complete comfort. A perfect work sock or boot sock! 1 PAIR PER PACKAGE *MADE IN THE USA 64% Acrylic, 21% Merino Wool, 8% Nylon, 6% Copper Polyester, 1% Lycra Spandex