Slightly irritated with my sister . She regularly takes my son places with her because all her friends have kids his he and she has non of her own yet . She has always had her own car seat for him to make it easier . Well he's just hit 40 pounds and is just 41 inches tall so not a huge kid , when she came to pick him up today she wanted to put him in a booster seat she got instead of the car seat an threw a fit when I said no . We ( me and SO) did extensive research on it and decided we want him in a 5 point harness as long as possible as research has shown it is much safer ( even for adults ford was looking at 5 point harnesses for adults in their cars ) . So we got him a convertible car seat that allows him to be in a 5 point harness up to 60 lb and in a booster after that until 90 lbs. I tried explaining it to her and all she did was throw at me that I was being over protective , and that he was gunna look redivulous being 5/6 and still in the harness and that he's big enough now that it's legal to do so it's fine . I'm really irritated and he didn't end up taking him today. Any one else have these issues with family?