Hand crafted, high performance Ultralight No Show running socks are lighter and thinner to provide a true minimalist running feel. Ultrafine Hi-Tech performance yarns on a high needle counting knitting machine provides the sheerest, lightest sock on the planet while still providing the necessary protection. Reinforced cushioned heel and toe for comfort and durability and a broad elastic arch support in both the arch and ankle firmly keep the sock in place. Heel tab aids in preventing the sock slipping into your running shoe. Left/Right construction method ensures the perfect fit.