●[Specifications] Size: Head circumference 19.7 - 22.8 inches (50 - 58 cm). Weight: approximately 7.1 oz (200 g). 10 ventilation holes. Please choose your favorite design. ●[CE certification] A safe childrens helmet suitable for a wide range of uses, such as bicycling, rollerblading, skiing, snowboarding, kickboarding, and skating. ●[Lightweight] The lightweight design is comfortable and safe for children. ●[Cute design] The helmet makes a great gift for occasions such as: first day of school, birthdays, Christmas, etc. ●- - - -