Please be sure to read the self-introduction section before purchasing. These are Brooks PureFlow running shoes. The size is 23.5cm. I bought them to go to the gym, but I'm not going anymore, so I'm selling them. They show signs of use. This model is no longer in production. They were very light and easy to run in. The color is flashy, but it's not that noticeable when you're wearing them. They're also recommended for running at night.