Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Does not work as designed!!

This chair would get a 5 star rating for design and use (both aesthetically, and mechanically). However, even after receiving a new pneumatic lift from Boon, the chair still will NOT lift up without my holding down the "orange button", and pulling up with both hands.And now, after only 3 months or so, the wheels from the bottom are popping off (I use my high chair on carpet). Before finding an actual wheel, I had found small metal balls on my carpet; and was clueless as to where they were coming from. Now I realize that they where ball bearings from the wheels.The quality and functionally of this chair makes me give it one star. It simply doesn't work. Next on my list is getting it fixed, or getting my money back. It pains me to write this review, because Boon is one of the few companies I normally buy products blindly from.