I received this as a gift, and it only says "2," so I don't know the size. However, it's the same size as a 12cm boot I had at home! I'm selling it because I had a similar pair of shoes that my child couldn't wear before outgrowing them. I plan to list more shoes of different sizes and outgrown clothes, so please take a look at my other items! I offer a discount on shipping for combined purchases!