The Darn Tough Men’s Run 1/4 Ultra-Lightweight Cushion Running Sock (Style 1040) in Black is a men’s running sock with a thin cushion layer along the footbed — gentle rebound underfoot for long mileage without bulk inside the shoe. The quarter-height shaft sits just above the ankle — high enough to clear the collar of low-cut running shoes, low enough to stay out of sight on fast miles. True Seamless toe construction closes the front of the sock smoothly so there’s no seam rubbing across long training days.
The knit — 50% Merino Wool, 46% Nylon, 4% Lycra Spandex — runs an even merino-nylon balance where the merino handles moisture wicking and temperature regulation across early-morning cold and hot afternoon miles, and the nylon keeps the sock durable against repeated shoe-friction wear. Black is the workhorse men’s training colorway that pairs with every kit.
Darn Tough knits every pair in Northfield, Vermont and replaces any pair that wears, tears, or develops holes under its lifetime guarantee.






