Make safety your number one priority with our innovative helmets designed for scooters, bikes and skates with the highest quality lightweight materials. The 3D Dinosaur converges style and safety. The magnetic buckle makes safety even easier for kids - simply locking into place in one go before any scooting or cycling adventure. Kids will love the fun yet lightweight designs! For sizing, measure the circumference of the head from the forehead where the helmet will sit, across the furthest point on the back of the head. Please do not guess.