Purchased from an authorized retailer. The size is 27.0cm. Regarding the fit, I usually wear 26.5cm, but 27cm was a perfect fit. It feels a bit narrower than other brands' shoes. There are signs of use, such as scratches and wear, so please check the images. The outer box used for shipping will be labeled 27.5cm, but the shoes themselves are 27cm. Thank you for looking.