I have explained to grandparents the "no coats in the carseat" rule that we go by, and they were both pretty shocked. They had never heard of such a thing and were worried that DD would get too cold. I told them that I always heat the car up first, that they make carseat panchos if its really bothering them, and that you can wear the coat backwards. But really, we live in Kentucky, not Alaska, so its really not ever dangerously cold. We keep a blanket in the car, and hand heating warm packs in case the car breaks down.
Anyway, for Christmas MIL got DD a coat that is made of fleece. Its not too bulky, just like a big sweater, and she got it with the intent of her being able to wear it in her carseat. Ive looked online, and it seems like the problems most people have are the bulkiness that doesnt allow the child to remain properly restrained. This coat will keep her restrained correctly, Im just worried about her overheating with regular clothes on (say, a shirt, sweater, and jeans) and this on top of it snuggled into a carseat.
I've also wondered this because with a newbie coming in late jan/ early feb I have thought about getting one of those carseat cover things that keeps them warm. Are those safe?
What do you think? Is overheating ever really the issue or is it just the bulk that I should be concerned about?