I purchased this at HARE a few years ago. I'm selling it because I've only worn it a few times and it gives me blisters. It's a lace-up mesh bootie. *Size...I've selected 23.5cm, but it's marked as size M, so it fits 23.0cm to 23.5cm. Since it has been used once, please refrain from purchasing if you are concerned. Please feel free to ask if you have any questions.