The size isn't certain, but I think it's around 24cm to 25cm. I've only worn them a few times, but I'm selling them to someone who understands they are used. The mark has partially discolored due to bleaching during washing. Please see the images. Please refrain from purchasing if you are sensitive to this. How about these for someone who doesn't usually wear white shoes but needs them for children's events or other occasions? Thank you.