These are silver-gray linen tabi socks. The soles are made of unbleached cotton. Size: 23cm I bought two pairs of linen tabi socks for spring and summer. One pair was white linen in my exact size, and the other was this silver-gray pair. My size was sold out, but I really wanted the silver-gray ones because they looked so nice, so I bought the next size up. However, I realized that they won't work unless they're my exact size, so I'm putting them up for sale. I haven't even tried them on. I'll sell them for half price plus shipping. Please note that since these are tabi socks, returns are not accepted.