My 4 year old has started undoing the buckle of his rear facing car seat harness and I don't know how to stop him! He didn't on a motorway today!
I have a clip that stops him slipping his arms out but that doesn't help with this problem.
Are the any devices out there that can stop this please?!
I have explained to him that's it's dangerous and he seemed shocked to be told off but I just can't trust him.