Applicable head circumference 54 ~ 60cm / 21.26 ~ 23.62in
[Helmet size] 26 × 23.5 × 13cm / 10.24 × 9.25 × 5.12in (length * width * height)
[Helmet weight] 690G
【Glass Size】 17.5 × 9cm / 6.9 * 3.54in (L * W)