but is not much difference from the next smaller size. The problem, however, that has not been fitted with the dainty head of my daughter Larger. (Has wobbled and was bothersome) So if you need an intermediate size as we are, then the helmet has been justified. The lamp at the back, however, I find meaningless. Although a nice gimmick, but nothing else. In addition, the lamp went after a short time in the breaks. When runternehmen a locking hook is broken. So if not necessarily this intermediate size needed for I would not necessarily recommend this helmet as well as relatively expensive. But with us it makes sense and therefore also for its purpose of protecting the child's head, well.