Darn Tough Socks will provide you with an unrivalled level of performance. Women's Merino wool micro crew sock has high density cushioning on foot bottom. Custom shrink treated Merino wool. Ribbing above the ankle ensures a proper fit. Reinforced heel and toe. Elastic support around the arch. Ring toe construction for a comfortable, invisible seam.  Made of 67% merino wool, 29% nylon, 4% lycra spandex.  Machine washable, tumble dry or hang dry. MADE IN VERMONT