Equipped with the latest technical features, the new Darn Tough Function X OTC sock is designed for maximum comfort and insulation for winter skiers and riders. Produced with midweight merino wool for superior smoothness, these midweight winter socks can make the day if you plan to ski through lunch. Terry cushioning and a unique ‘X’ pattern at the foot offer warmth, while reinforced heels protect with each descent. Darn Tough Function X OTC Midweight Men’s socks have a 17 in. height from heel to cuff.