Design and Details Performance fit Slip and bunch resistant Moisture wicking Lightweight Made with merino wool Breathable Made in USA Responsive temperature regulation 59% Nylon, 37% Merino Wool, 4% Lycra Spandex. Socks from the Darn Tough brand.. Ready to give it a try? Visit www.dickssportinggoods.com to learn more, explore additional product details, and check availability at a DICKa (TM)S Sporting Goods store near you. Place your order online for fast shipping or in-store pickup a " DICKa (TM)S makes it simple to find exactly what you need..