The Darn Tough Work Steely Quarter Graphite men's sock Features 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 under foot. It comprises of 63% merino wool, 35% nylon and 2% lycra?Â« spandex.