We have had The chair for 9 months and the chair is not yet a year out from the date of manufacture. Except for the wheels the chair has been wonderful. The wheels are very stiff to move and when you try to roll back or forwards it takes quite a lot of effort and you always end up moving sideways even on bare concrete. That said we replaced the wheels with roller-blade style wheels and the chair moves fantastically. That was until about two months after installing the wheels. We thought one of the wheels had broken but were shocked to find out that the base had broken and other wheel mounts on the base were in the process of breaking. I called the phone number on the user manual gave them the model number date of manufacture under the seat my phone number name and address and they are sending a new base out. If they fix the welds on the base and use roller-blade style wheels by default they will have a 5-star chair.
seemed well built - easy to put together - didnt take long for the cushion to start flattening out - next thing that went was the pneumatic lift - just sinks to the bottom making the chair uncomfortable as Im pretty tall and lastly the plastic on the arms are cracking to the point where it pinches and scrapes your skin - just another overpriced chair that does not live up to expectations since it failed in less than a year