Designed for long runs on uneven trails, the TRAILFLY SOCK offers comfort & protection in the areas you’ll need it most. With targeted cushioning underfoot providing protection on unpredictable terrain & a snug fit this sock is so comfortable you will feel like you can run forever. The highly breathable, moisture-wicking fabric features vented panels around the midfoot, helping keep the foot dry & comfortable. & to make it even better, the socks are made from 68% recycled materials.