I have this chair now for almost two years (about 1 year and 10 months). After initially I was very excited (very comfortable, it wobbles and squeaks nothing), he goes slowly but surely after such time broken. Without a screw would loose, it wobbles at once very. In addition, the artificial leather on the seat is beginning to dissolve, there are unsightly cracks. First squeaks are heard.
If you really want long-term quality is wrong here.
EDIT:
I was accommodating enough, promised a new adjustment and seat via email. Thanks!
EDIT 2:
Yesterday adjustment, seat and gas spring has arrived. Was easy to assemble, and the chair is like new again. Class service!