... % nylon,8% copper yarn,2.5% spandex Anti-bacterial Copper Socks 1.Anti-bacterial and deodorization 2.Real copper yarn 3 ... .Nano-technologyAnti-bacterial Copper Socksantibacterial socks copper socks copper yarn socks 1.Material:63.5% cotton,26% nylon,8 ... sock has been used in Army.Test Report: Cupron copper socks