Micro premium helmets are packed full of little details that make a big difference. The strong ABS outer shell is robust and affords excellent protection.The dial at the back of the helmet can be used to adjust the helmet to the perfect fit. The Fidlock magnetic clasp closes easily and avoids pinching. The 8 air vents ensure good ventilation and comfort for all day wearing. Finally, an integrated light on the back of the helmet with red LED lights will ensure your child can be clearly seen when scooting. Size - 54-58cm