Instruct: Classify Amazon reviews into positive or negative sentiment
Query: do not buy this terrible seat

We purchased this seat for our daughter when she turned one. Seemed like a great option and was inexpensive. After a while, the back of the seat continued to pop off. That was so annoying. We began noticing a bruise along my daughter's lower back at her spine. It would slightly fade and then come back. I became so worried that it might be cancer until I read online that it might be the hard plastic seat pressing on her lower back. As soon as we replaced the seat with the Prince Lionheart Booster Pod the bruising went away. I highly recommend the Booster Pod in place of this terrible seat. The Healthy Care booster seat is so hard and uncomfortable and not safe for their lower backs. Don't waste your money.