Utilizing the high-performance capabilities of Shadow Yarn, the Body Helix Hydro-Tec Socks transport moisture and heat from areas of highest to lowest concentration for a comfortable, thermally balanced wear. Combined with the ultra-blend of 78% Hydrotec Polyester, 20% Nylon, 2% Spandex, you will find comfort and performance. We've also added a cushioned footbed to enhance comfort and extend athletic performance. And Microban®, an antimicrobial product, fights the growth of odor-causing bacteria to keep your socks cleaner and fresher.