Cotton Wool Rib Sock - NavyA perfect blend of cotton and wool, these Rib Socks from RoToTo are made using small batch knitting machines and traditional techniques to create a simple, comfortable sock that lasts. This navy pair is finished with a comfy, wide ribbed ankle and hand linked toe seams youll never know are there. Warm cotton wool blend sock Ribbed ankle and cuff Hand linked toe box Made in Japan Materials: 41% cotton, 16% wool, 16% Polyester, 6% nylon, 2% Polyurethane