Conquer everything from rugged single track trails to rough jeep roads with ease in Darn Tough's redesigned ¼ running sock. Offering a smooth and ultra-lightweight fit, this sock provides added ankle coverage with soft, next-to-skin ribbing. Breathable flex zones in the forefoot enhance ventilation, while arch support helps combat fatigue, keeping you comfortable mile after mile.  A performance fit means no slipping, no bunching, no blisters. Here's to focusing on your run and not your feet Arch support alleviates foot fatigue and bunching for long-running comfort with zero slippage Flex windows mean less material where your foot needs to move the most so nothing interferes with your stride Runners enjoy Merino Wool's ability to dry quickly and move excess heat and moisture away from feet Darn Tough's lowest profile, ultra-lightweight yarns create zero bulk, zero itch socks that feel like a second skin Materials 50% Merino wool, 46% nylon, 4% lycra spandex