My 6yo is too big for a booster. Too heavy. All muscle so its not something we can reign in.

Haz has only just turned 3, but he is 15kgs - all muscle too. Car seats are only weighted to 18kgs - so I will need to put Haz in a booster much sooner. He is looking forward to it because it has Lightning McQueen on it, lol. I wanna clean the reversable for the baby anyway.

They say they are going by age because we - being parents - arent all going to be up on our kids height and weight... This still irks me. I know all 5 of my kids height and weight and will continue to use that as per the safety recommendations of the equipment I am using.