Sierra Socks Women's Cotton Outdoor Boot Hiking Casual Socks 2 Pair Pack 2239 75% Cotton, 23% Nylon, 2% Spandex Imported Machine wash cold with like color. Only non-chlorine bleach when needed. Tumble dry low heat. Nice Black & White Twisted Crew Very soft hand feel. Twisted Yarn or Marled Yarn. Smooth toe seaming. Medium thickness. Still Not Sure. No Worries. 100% Money Back Guarantee