Review on Adjustable Kid Bike Helmet for Children Girl Boy - Ideal for Scooter, Skateboard, Cycling, and Roller Skating by Joseph Harkins

I'll have to update this if he can actually wear it. Please read the size carefully and measure carefully. The minimum head size is 18.9 and my son is 19. Well I must have measured it wrong because today it's 18.75 and the helmet doesn't fit. We kept it to a minimum and tightened the band all the way, but it was still too big. 0.15 inch makes a big difference. So sad. Although my fault. The helmet is very cute and seems sturdy and well constructed. So we're putting it off until later. My four year old has a small head I think because he wears baby size too.