I've got proper rear facing seats in my car, but I'm looking for a cheap, basic seat for the grandparents car. It would be used on fairly rare occasions, and probably just around town rather than on any motorways. So I don't want to spend hundreds. But I'm a bit scared that the cheap ones might not be safe.
It would mainly be used for my four year old (during school holidays and so on), but if it would also be suitable for my two year old that would be a bonus. I guess a high backed booster is the way to go?
Thanks