The Men's Run Quarter Ultra-Lightweight (Style 1034) is a minimalist Merino running sock for high-mileage runs and race days. A 1/4-height cuff adds ankle coverage without bulk, and the ultra-lightweight, no-cushion build keeps things fast and breathable underfoot. Breathable flex zones in the forefoot and fatigue-zapping arch support deliver a true performance fit—no slipping, no bunching, no blisters—while fine-gauge Merino wool wicks moisture and resists odor. True Seamless construction lays smooth across the toe. Knit in Vermont, USA and backed by Darn Tough's Unconditional Lifetime Guarantee. 50% Merino Wool / 46% Nylon / 4% Lycra Spandex.