These kohaze (tabi fasteners) are size 24.5cm, but after wearing them once and washing them, they shrunk due to being 100% cotton, so they're now suitable for someone who wears 23-24cm. There are no noticeable stains. I think they are almost unused, as I can no longer wear my usual size due to swelling after breaking my ankle. Please read my profile. I look forward to your purchase if you understand.