Hmmmm DS was 82 cms at his last check up (2 months ago) and 12 kgs. He is now 20 months and still in his normal car seat. I know that my car seat (a safe and sound one) goes up to 18kgs.

I hadn't been planning on getting a booster seat for awhile yet. Perhaps I should be?? I had a look at the maxi booster and they are from 8kgs through to 26 but there is no way I'd be comfortable putting an 8kg bub in them! They look really cool though they are a bit expensive!!