Let your kid bike safely with the ABUS Smiley 3.0 Blue M. The bike helmet fits a head circumference between 50 and 55cm. You can adjust the size in width and height with the dial on the back. That's useful as the helmet lasts longer this way, even when your kid grows. Your child's head remains cool while biking thanks to the 8 ventilation holes. The helmet padding is removable and washable. That way, it won't irritate your kid and the bike helmet stays fresh. Thanks to the blue color and fun design, your child will look forward to getting on their bike. The helmet has space for a rear light, so your child stands out even more. The rear light isn't included.