Thank you for viewing. Purchased at Montbell Marui Kichijoji store and used four times for my child's mountain climbing (Mount Fuji, Omote Ginza to Yari, Shirane Sanzan, etc.). There are some scuffs from use, but there have been no drops or impacts during use, and there are no dents. There are no direct markings. Since my child has outgrown it, I hope someone who wants to let their child climb mountains safely will use it. Please refer to the details of the product below. This is an ultra-lightweight helmet for children's mountaineering and climbing. The in-mold construction of the outer shell and inner shell achieves excellent lightness. It reduces the burden on children. It meets the international safety standard European standard EN12492. Dial adjuster to adjust the fit according to head circumference. A dial adjuster is provided on the back of the head for easy adjustment of the fit. Safety standards for L.W. Alpine Helmet Kid's European standard CE (EN 12492) Complies with European safety standards for mountaineering helmets. Specifications [Material] Outer shell: Polycarbonate Inner shell: Expanded polystyrene Inner pad: Polyester [Weight] 220g [Color] Blue Green (BLBK) [Size] Kids Free Head circumference: 50-54cm [Year of manufacture] 2022 Please consider purchasing with the understanding that it has a history of use and that returns are not accepted.