They are 23.5cm. I've used them this season, and I'm selling them because they're too small. The toe of the left shoe is missing due to scuffing, so please consider that when purchasing. There is a tear of about 2cm on the inside upper of the left shoe, but it's not a noticeable hole. I can't guarantee that they still have sufficient rebound. Thank you. Prime SP2 SP2 SP3 Prime SP2