This Bell Mini infant helmet provides stylish comfort and protection for the smallest passengers. Keep little ones' heads protected while they're riding in child carriers, bike trailers, or just learning to ride on their own. A True Fit feature offers simple, custom sizing every time, while seven top vents keep kids' heads cool. This helmet has a sleek new shape with a grown-up visor for protection from the sun and other elements. Safety lights and reflectors improve visibility, and a Pinchguard buckle means no tears when Mom and Dad are snapping the helmet into place. The extended rear coverage provides extra protection for your child, while the BaseGuard offers improved aesthetics and durability. CPSC 1203 Bike safety certified. For ages 1-3. Fits head sizes 18.5-20.0 (47-51cm).