Enjoy a more hygienic and odorless feel with Kevin's Cupron copper-infused crew socks. The patented copper-infused material eliminates up to 99.9% of bacteria and fungus, while the breathable fabric blend of 23% acrylic, 22% merino wool, 16% Cupron® polyester, 9% UltraSpun polyester, 28% nylon, and 2% spandex ensures a comfortable fit. Put your feet in the perfect balance of comfort and hygiene.