The Darn Tough Work Steely Quarter Graphite men's sock Features a Full Cushion Toe Box that provides added comfort and protection in steel-toed work environments. The sock features merino wool, fine gauge knitting, fast action wicking, and true SeamlessT to offer an ultra-smooth, invisible feel. It is guaranteed for life and is naturally antimicrobial. The 1/4 height sock is great for low-cut hikers and running shoes and includes mid-level cushion density underfoot. It comprises 63% merino wool, 35% nylon, and 2% lycra spandex.