Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Malfunctioning Chair

I would have given these chairs a 5 star rating, because the chairs are just like they look in the picture. The reason for the 2 star rating is that one of the chairs doesn't have a proper seal for the pressure when the chair is raised. In other words, when the chair is at it's maximum height and someone sits on it, it will slowly go down to the minimum height after about 20 seconds. So it seems to me you are taking a gamble by buying these. Hopefully the other working chair will withstand the test of time.On a separate note, the accompanying table (sold separately) had a big chunk dinged out of the top edge of the table, so I cant recommend that either.