We have the baby car seat exactly once and then never again. The problem: It is hard and uncomfortable. That alone would perhaps not. But there are also no side padding for the head - bad, when the baby falls asleep at what can happen when cycling well. In addition, the hollow to sit in my opinion too far down so that upper body too much, for the legs but not enough space. So the feet hanging out over a certain size, in our child already with 7 kilos. We have now opted for a baby hammock for the Chariot. Much better, but just fits even in the Chariot.