How do I know what size helmet my child needs?

Measure your child's head circumference with a soft tape measure wrapped around the widest point above the eyebrows. Match this measurement to the helmet's size range—toddler helmets typically fit 48-52cm, kids helmets 50-55cm, and youth helmets 52-58cm. When between sizes, choose the larger size and use the included thicker padding inserts. Always try the helmet on before riding—it should sit level, cover the forehead, and not wobble when the retention system is properly adjusted.