These double-layered thermal socks are for tourism, extreme sports, and ATV & UTV riding. Designed specifically for cold seasons. The inner layer is made of Merino wool, which accumulates an exceptional level of warmth. The outer layer prevents an occurrence of callosities and ensures maximum endurance. The X-shaped zone ensures that the socks stay up on your feet. An ergonomic fit and flat knit toe seams prevent rubbing of sores and provide comfort.