The Darn Tough Solid Basic Crew Charcoal women's sock features neutral colors that offer versatility fit and the natural fibers provide endless comfort. The sock features merino wool, fine gauge knitting, fast action wicking, and true SeamlessT to offer an ultra-smooth, invisible feel. The sock is guaranteed for life and is naturally antimicrobial. The crew height sock is built light, darn comfortable, and super strong to provide a lightweight, sure fit. It comprises 66% merino wool, 32% nylon, and 2% lycra spandex.