Though endlessly enjoyable and constantly varied, trail running is always challenging. These UpHill Sport “Trail” Running L1 Socks support you over long distances runs, whether the going is soft soil and grassland or uneven, hard and rocky tracks. These light running socks are suitable for even medium and heavy conditions, constructed in smooth, quick dry material that helps keeps unwanted moisture away from the skin. Moisture, along with friction are the main causes of blisters and these socks, with terry cushion heels and padded, seamless toes to a long way to stopping them. The crew length socks include ankle protection with extra padding and a y-shaped heel for a fit that prevents sock slip.