Iron Joc No-show socks are made from state-of-the-art yarns with our proprietary hybrid antimicrobial odor-fighting technology that's guaranteed for the life of the socks. Super wicking yarns contain Menthol for cooling comfort. Built for running, working out, and everyday wear with light compression, arch support, and smooth toe for all-day comfort. 90% polyester/10% spandex. NO LOGOING.