Thank you for viewing the product. This helmet comes in a one-size-fits-all design, eliminating the need to worry about sizing, and features LAZER's proprietary KinetiCore protection technology. The model available in Japan adopts an Asian fit. It's a versatile model suitable for a wide range of activities, from daily commutes and school trips to weekend cycling. By attaching the Universal LED (sold separately) to the direct mount on the back of the helmet, you can enhance safety and visibility. The product is brand new and unused, only taken out for inspection. #SHIMANO #Shimano #Helmet #KinetiCore #Cycling #Red #Bicycle