NWT NIP New Cuddl Duds Leg Layering Crew socks; 6 pair pack; Black Basic Pack. Super sock pairs include black and grey/gray solids and tweeds. Made of 98% polyester and 2% spandex. Machine wash in cold water with like colors. Use only non-chlorine bleach when needed. Tumble dry low, do not iron. Please view and zoom in on all photos. Thank you for looking.