Black Diamond Vision, Size M/L Color: Astral Gray Retail price: 15,290 yen (tax included) No instruction manual, but it can be downloaded from the official website. Used for a total of 8 days for regular mountaineering and snow mountaineering. There are some minor scratches and dirt on the outside, but it does not affect the fit. It was a very light and good helmet, but I am selling it because the size was a bit large for me. This is climbing equipment, and I understand that there are no quality issues at this time. However, please understand that I am not responsible for any accidents caused by this product after purchase. From the official HP: The most robust model of Black Diamond helmets. Combining EPP and EPS with an ABS shell achieves both lightness (220g for S/M) and durability. In addition to new side and rear protection that meets UIAA standards, it has ventilation ports to improve breathability in hot weather. *Bordeaux and Aqua Verde are only available in S/M size. EPP+EPS+ABS composite shell, the most robust in BD helmets Thin suspension system Integrated headlamp clips that don't snag Removable and reversible pads Weight: S/M = 220g (actual value) M/L = 240g (actual value) Size: S/M = Head circumference 53-59cm M/L = Head circumference 58-63cm