Off road motorcycle helmet Mountain bike certified helmet, including a helmet,Multiple color options available? a pair of gloves, and a pair of goggles.Teenagers and kids youth helmets Material: high quality ABS+EPS Applicable season: suitable for all seasons Weight: 960±50g. Four sizes: S55~56cm, M57~58cm, L59~60cm, XL61~62cm, Inch size: s21.6~22in, m22.4~22.8in, l23.2~23.6in, xl24~24.4in (This product is manual measurement, the error is generally 1-2 cm) (The new helmet may have a slight smell, please put the helmet in a ventilated place, it will disappear gradually after a few days) Quality and safety standards United States: DOT standards ?The display color of the actual product may be slightly different from the display effect. Please refer to the actual product color ?If you encounter any problems during the purchase and transportation, please contact us via email, we will provide you with the best solution within 24 hours.