I asked a question a couple of days ago about boostering my tall 6.5 year old (51 inches and 60ish lbs) and got some very helpful answers on here including answers to all my follow-up questions (thank you!). I had just about decided to go with just using her Frontier 85 as a booster since it is very tall and doesn't require the car to have headrests but started to worry about how heavy it would be running her into her seatbelt in an accident (no LATCH, either, since we have fifteen-year-old cars). It seems like the company wouldn't allow unLATCHed heavy boosters if it weren't safe, but when I did a review of old forums, I found very old comments saying people wouldn't feel comfortable with that and alluding to European testing suggesting that heavy boosters are possibly less safe due to loading onto the child in an accident (this is my concern and I thought I might just be neurotic until I started reading more). One person weighed in on this on my other thread and suggested contacting the company, which I think I will do, but I know there is a lot of knowledge here and wondered if anyone else had thoughts or updated info on unLATCHed heavy boosters. Would you put your child in one? Is there any data on whether it's a bad idea? Am I just paranoid? Thank you!