RoToTo 1179 Sankaku Comfy Room Sock in Gold/Black/NavyRoToTo R1179 Sankaku Comfy Room Sock in Gold Black Navy. Using soft, comfortable and heat retaining acrylic wool blend yarn, these chunky slipper socks are knitted with a machine specially made to produce work socks. The lining is brushed after being knitted for extra heat retention. 80% Cotton, 15% Wool, 4% Polyester, 1% Polyurethane Ribbed Trim Hand Wash, Lay Flat to Dry Made in Japan ROTOTO Crafted and designed in Japan, RoToTo uses traditional and