Instruct: Classify an Amazon review into positive or negative sentiment.
Query: my son loves it!

Just be careful. My son was able to pull the whole unit off of the stand up platform. There is a switch that you can click to remove it and lay it down flat if your child is not able to sit up on their own. My son has strong arms and pulled it right off! Now I just have to be sure to either lay it flat or supervise him carefully when he is playing with this upright. He prefers upright and shows little interest when it it flat. He also likes spinning the wheels! haha