ROCKY Signature Socks have been specially engineered to be worn with your ROCKY footwear. Using the latest fiber technologies and product design, these socks provide the maximum performance and comfort with every step. Made with 85% Acrylic which helps wick moisture away from your while providing superior durability. Ravel-free welt loop keeps socks up. Stretch fibers from top to toe for a snug, secure fit. Arch zone for extra support. These socks have also been treated with an ODOR FIGHTING anti-bacterial wash that provides a built in deodorizer on the sock. This also inhibits the growth of bacteria, mold and mildew to ensure round-the-clock hygenic freshness.