Maybe I did something wrong. I put the chair together easy enough. The updown level works great. The tilt mechanism however does nothing and it appears to tilted back. Which like some others have said gives no lumbar support. I’m going to have to order some cushioning to make up for this. Also the cushion isn’t fantastic. It’s okay. But could be much better. Would I buy again No. I followed their image only directions. It won’t tilt. I see others are having the same issue, though it has the level and advertises the function so no. But I don’t have time or patients to return it.