Brand new, unused. Size is 28.5cm. Purchased from Nike online. Notes: All items I sell are purchased from authorized retailers, so please rest assured. Although they are new, I do check them, but there may be wrinkles, dust, or dents in the box. Please understand this before bidding. I may cause some inconvenience to the winning bidder, but thank you for your understanding. Currently, I have a large stock, so it may take 3-4 days to ship.