These are tabi socks for children. I had to buy these new because the rental tabi were too big. (My child's usual shoe size is 13cm, but the 13-15cm tabi were too loose, and this size was just right.) They were only used once for Shichi-Go-San, so the wearing time was only a few hours. I washed them and they appear to be almost free of stains, but they are still used, so please consider this before purchasing. *Instant purchase without comment is OK.*