kids helmet,kids bike helmet,bike helmets for kids,skateboard helmet,spiderman helmet,skate helmet,micro scooter helmet,scooter helmet,girls bikes age 8 to 11 years,kids' helmets SAFE AND STURDY: CE Certification. Considered as the best gift for kids bike, tricycle, skateboarding, roller skating, inline skates, scooter, rollerblading IMPACT RESISTANCE: Kids Helmet use sturdy ABS outer shell and shock-absorbing EPS foam inner, which can absorb external pressure in sporting activities and educe your child risk of injury when biking ADJUSTABLE: Equipped with adjustable chin straps and spin dial to ensure a better fit. The spin dial on the back of helmet and chin straps can be adjustable according to your kids head circumference COMFORTABLE DESIGN: The vents are small and exquisite, which not only guarantees the breathability, but also not too cold, suitable for the current season. Different from the single-layer sponge lining, the helmet lining adopts healthy cloth and sponge, which is not easy to be damaged and brings a unique comfortable experience to children SIZE: Size S is suitable for head size 50-54cm, which as an approximate age guide is 3-8 years. Size M is suitable for head size 54-57cm, Size L is suitable for head size 58-61cm,which as an approximate age guide is adult men and women. Measure the circumference slightly above eye brows to ensure you choose the correct size