I haven't read the thread, but the answer is 'yes' if you live in mainland europe. Once they outgrow the harnessed seats here they go into boosters until they are 12 or 150cm. You guys are so lucky to have the option of extended harnessing for taller children.
DS had outgrown his harnessed seat at 3yo and although it converted to a booster he was only 13.5kg, not the min 15kg required by law here. We bought him a german seat with a torso cushion which we can use until he is 18kg, which in his case will probably be around 5yo. His friends all ride around in HBB.
DS had outgrown his harnessed seat at 3yo and although it converted to a booster he was only 13.5kg, not the min 15kg required by law here. We bought him a german seat with a torso cushion which we can use until he is 18kg, which in his case will probably be around 5yo. His friends all ride around in HBB.






But honestly, this is a decision that we reached ourselves, simply by comparing the car seat straps to the seatlbelt and saying "WTF? Why would this zero-rebound setup be better? Won't the kid's had snap forward pretty hard? And why are we assuming that these teensy little metal thingies secured to a plastic shell are not going to break?"





Or maybe I've just got dropitis.
I don't lean down to pick up my chapstick or whatever, since that's not something that's super imperative to have right that second. I just wait until we stop.
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