Reveal your fun-loving side in the Darn Tough Willoughby Micro-Crew Lightweight Hiking Socks for Men. The climate-controlling merino wool construction ensures they back up fun with plenty of functional. These lightweight cushioned men's Darn Tough socks prove perfect for hiking with the fine-gauge 53% nylon, 44% merino wool, 3% spandex knit delivering a no-slip, no-bunch performance fit. Fast-acting wicking quickly pulls moisture away from skin to speed drying. Odor-resistant merino wool feels good during any season, staying cool in the summer and warm in the winter. Manufacturer's unconditional lifetime guarantee. Machine wash. Manufacturer style #: 5003. 53% nylon, 44% merino wool, 3% spandex knit Perfect for hiking No-slip, no-bunch performance fit Fast-acting wicking Odor-resistant Manufacturer's unconditional lifetime guarantee