This is a set of two pairs of tabi socks. The size is listed as 21.5 and 22.0, but the actual size is about 20.5cm, so I am listing them as 20.5cm. One pair is made of a smooth, cotton-like fabric, and the other is made of tetron. Both pairs have a flannel-like fabric on the inside. The tetron pair is slightly wider. There are some scratches and stains, but how about using them for practice or outdoor wear?