I have a quoestion about the graco junior maxi highback. My partner is going through courts to have access to his Son, and finally after a year he gets him on a saturday for 2 hours, however the carseat we have is apparently not safe and illegal according to my partners ex for thier 3 year old son. We have sent her the links to it and she's still arguing that he can't go in it. He is big for his age just wondering if anyone can give me advise on this please even if there is something that states that it is from 3 years and not illegal. Thank you.