Super-thin, and extremely light but still protective and performance-enhancing for runners of all levels, these made-in-Finland UpHillSport “Trail” Low Running L1 Socks are smooth, fine-feel low cut socks with terry loop cushioning on the inner heels and toes. The thin knit and fitted shape gives a better fit, better breathability and better control in technical running shoes. The low ankle includes protection with extra padding at the Achilles to prevent damage. The design includes a y-shaped fitted heel and quick-dry, moisture-resisting fabric.