The Darn Tough Style 1040 Men’s Run 1/4 Ultra-Lightweight Cushion is a men’s quarter-height merino wool running sock knit with light cushion under the foot. Quarter height sits just above the ankle bone — taller than no-show, shorter than crew — for runners who want visible sock above the shoe collar without pulling heat up the calf. True Seamless toe construction removes the toe-box seam.
The Black colorway the universal pick — disappears under any boot or pant. The ultra-lightweight merino blend runs cooler than traditional merino builds — faster drying, less retained heat, better airflow on hot pavement miles. Cushion is placed exactly where the foot loads through the shoe; the rest of the sock is kept thin to avoid pressure points inside the running shoe.
Darn Tough is family-owned and knits every pair at their mill in Northfield, Vermont. Lifetime guarantee covers running pairs the same way it covers boot pairs — run them out, get a new pair.
