Description START THEM YOUNG. Whether they are enjoying the ride in a trailer, or balancing on their own two wheels, your youngest shredders can ride in style and safety with the Lil Ripper. A compact shell is available in two sizes, with a fit system to dial it in perfectly to your child's head. The no-pinch side buckle means it can be fit easily and quickly to squirming kids, and the fun graphics mean your child will WANT to wear this helmet. Features details FUSION IN-MOLDING POLYCARBONATE SHELL - A process pioneered by Bell bonds the helmet's outer shell to the EPS foam liner to create a sturdier helmet. ACTION FIT - Designed for street and skate helmets, this streamlined fit system offers an adjustable, secure fit with the turn of a dial. RETENTION SYSTEM - Smartlock No-pinch Side Buckle. SPECIFICATIONS - Universal Toddler (45-51 cm) and Universal Child (57-54 cm) Sizes. Important: always take a head measurement. Head sizes and shapes can vary, even within an age range. Using a helmet that does not fit can be dangerous.