These tabi socks are very comfortable to wear due to the pile lining. How about using them as room socks for the coming cold season? Product Number: SUMI-020 Pile Socks, Tabi Type Color: Gray Size: Free Size, Unisex, Room Sock Type 78% Cotton, 14% Carbon-infused fiber 7% Nylon, 1% Polyurethane Free Shipping! Made in Japan (Nara) Don't miss this opportunity!