At 7m Mr W stopped using his boppy seat when I caught him hanging by his hands off the counter while wearing it.
At 5m he figured out how to unlock the strap on the changing station. I heard "click" and then he was rolling off it.
He fiddles with the release button on his car seat all the time, but it requires more pressure than he can create to unlock it. We had to get a new one because of this.
This carseat has the highest pressure release and a 6-point harness he cannot get out of.
http://www.skjp.com/products/skjp_radian_80.php
