I've only tried it on a few times. ◆Size Head circumference: 54cm Brim: 8cm Height: 9cm *Please note that these measurements are approximate due to being taken by a layman. ◆Notes◆ Please understand that this item has been stored at home, and will be folded for shipping, which may result in wrinkles. Please also be aware that there may be overlooked stains or imperfections. We appreciate your understanding before purchasing. *We are very sorry, but the price of this item is already at its lowest, so we cannot offer a discount. Thank you for your understanding.