They are 15.5cm! I've worn them a few times. I think they are relatively clean, but there is some scuffing on the heels from playing on the slide at the park. (See photo 5) I've put car stickers on the insoles so they don't get mixed up, so please only consider if you don't mind! I plan to ship via post. Please be aware if you have allergies, as I have a dog.