Darn Tough Run No Show Ultra-Lightweight is a low-cut training sock developed for efficient performance and high comfort during running and varied training. The ultra-lightweight, technical construction makes the sock well suited to trail running, treadmill sessions and general activity in low-cut shoes, year-round.

The sock is thin, highly breathable and quick-drying, helping to keep feet dry and comfortable even as intensity increases. A high merino wool content provides natural temperature regulation and comfort, despite the lightweight construction. An elasticated compression band around the arch delivers a stable fit and reduces friction, contributing to a lower risk of chafing and blisters.

Welded toe seams give a smooth, comfortable feel without irritation, while the low no-show design with a heel tab provides extra protection at the back without showing above the shoe. The sock is developed to retain both its fit and function after repeated use and washing, and comes with Darn Tough's lifetime guarantee against manufacturing or wear defects.