Got this a few weeks ago. It was medium hard to put together. The lumbar bar tends to not stay in place; I need to bring it back up a lot. It also feels awkward like the seat will eventually wear out. All the controls work great however and it's otherwise comfortable and easy to roll around!
This was purchased for a man who is 6ft 3" tall. He loves the chair! Well ventilated and comfortable. He says it gives his back and neck great support Excellent chair for a commercial use.
The chair is nice but only two of the wheels were able to be snapped into place the other three don't fit. It is too much of a hassle to return so we will figure something out.