Strong and safe: Shock-absorbing rigid foam foamed into an impact-resistant outer shell, the In-Mold process creates a durable bond for a robust helmet. Size adjustment: Adjustment wheel for a good fit. By turning the adjustment wheel, the head-enclosing ring inside the helmet adjusts to the head circumference. Product details: Children's bicycle helmet for the little ones, weight 220 g, colour light blue with crocodile pattern (Blue Croco), Size S = head circumference 45 - 50 cm. Includes chin support. For ponytails: Height-adjustable system at the back of the head can create enough space for a ponytail or braid, perfect for children with long hair.