The size is M. It's probably around 23cm for women. They are black velvet sandals with the soles wrapped in what looks like hemp twine. I've only worn them a few times at the entrance to try them on after purchase, and I haven't worn them outside. There is some slight dirt on the soles. I plan to ship them in a Yu-Packet Plus box, so I will fold down the ankle part to fit them in the box. Please be aware of this. If you are concerned about the condition or are looking for a pristine item, please refrain from purchasing.