As a temporary seat for the grandfather who once chauffeured our son only once every few weeks, a few meters, he is totally sufficient. Longer distances I would not do with him. Our son is 5, and when he falls asleep, he is related to the neck in the belt. Therefore actually useless as size-2-seat, but at the earliest when the child grows or it's all about short-range with "Wake-permanent guarantee". But he was also thought so. Therefore, all the stars.