Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Britax car seat

we like the car seat, but although my son is almost four years old, he kept letting himself out of the seat, while we were driving, so back to his baby car seat he went!I think I may have stuck with a three point harness instead. Not so easy to escape from, and a little safer as well. The velvet also dirtys very easily.