Buco Protector Buco Half Vintage Helmet Protector Inner circumference of the helmet: Approximately 63 cm ★ I have selected size L because I couldn't list the item without choosing a size. I had it repaired at a shop to fit my head circumference and to wear it deeply. Please refer to the photos for the height. Since it is a vintage item, there are scratches and stains, so I have selected "Used with scratches and stains" for the product condition. Please refer to the photos and make your judgment. Returns and refunds are not accepted under any circumstances, so please ask any questions you may have.