Choose your colour to ride in style! This bowl-shaped helmet provides protection with more head coverage. It is simple to adjust with its adjustment dial and pre-adjusted straps. Design benefits : Impact protection ABS shell, compliant with the EN 1078 standard, extended head coverage. Adjustable Rear dial, pre-adjusted side straps. Ponytail opening. Ventilation 12 vents. Lightweight Weight: 345 g in size S, 400 g in size M. Size - Head Size Conversion: S: 52 - 55 cm, M: 55-59 cm Ensure your child's safety with the Kids' Bike Helmet Bol 520, designed to meet the EN 1078 standard for optimal protection. Featuring an ABS shell and extended head coverage, this helmet offers peace of mind while riding. The rear dial and pre-adjusted side straps provide a secure fit, while the ponytail opening ensures comfort for longer hair. With 12 vents for airflow, your child can enjoy a cool ride, all in a lightweight design of just 345 g in size S and 400 g in size M.