"When a long day is ahead, the Darn Tough Patriot Micro-Crew Ultralightweight Running Socks for Men are built to match your stride. These Darn Tough socks sit approximately 8.5"" from heel to cuff and land roughly 6"" above most runnings shoes. They are ready for when the trail gets gritty, yet flexible enough to move with you mile after mile thanks to updated flex zones and targeted arch support that keep your feet energized. Breathable merino-wool knit naturally balances temperature to help you stay dry and focused. Nearly invisible True Seamless toe seams prevent irritation and hotspots. The no cushion design of the Darn Tough Patriot Micro-Crew Ultralightweight Running Socks for Men deliver maximum breathability and next-to-skin feel. Machine wash cold. Tumble dry low. Manufacturer style #: 1037. 54% nylon/40% merino wool/6% Lycra spandex Updated flex zones and targeted arch support Invisible True Seamless toe seams"