The Darn Tough Men’s Run No Show Tab Ultra-Lightweight Cushion Running Sock (Style 1039) in Ash is a men’s no-show running sock built to disappear inside a running shoe — the cuff sits below the shoe collar with a protective heel tab that blocks Achilles friction. A thin cushion layer along the footbed adds gentle rebound without bulk inside the shoe. True Seamless toe construction closes the front of the sock smoothly so there’s no seam bump across fast miles.
The knit — 48% Merino Wool, 48% Nylon, 4% Lycra Spandex — splits merino and nylon evenly so the merino handles moisture wicking and temperature regulation through hard workouts, and the nylon keeps the sock durable against repeated shoe-friction wear. The 4% spandex keeps the cuff tight around the ankle so the sock stays put. Ash is the light-gray workhorse training colorway.
Darn Tough knits every pair in Northfield, Vermont and backs them with an unconditional lifetime guarantee.






