Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Dangerous Crutch

I have heard from Safety Techs that this product gives an unfounded feeling of security to parents, and, even when used according to its directions, can allow the seat to be dangerously loose in a crash. It can even damage the seat belt. Please get your seat checked professionally and learn how to install it right. This 'helper' isn't the kind you need.