Every kid is different...my 4 yr old sits on a booster with a thingy that makes the seat belt go across a child more comftably....you know the thing, it connects both straps so you can adjust the belt.. ..ah blast cant remember the name.. Anyway..i know that she wont escape...but my youngest puts houdini to shame!!! you have to know your child...do they escape????...or not budge!! :lol: