This is better than my previous chair but my back still hurts. I've been experimenting with the settings and taking more standing breaks to compensate.
The chair was super easy to assemble. It's comfortable for the most part but the seat starts to feel less cushiony after about hour 5. Overall it's been a good purchase.
I unfortunately had to return the chair because it did not fit me. My feet where just a little off the floor at the lowest setting. Because I have back problems I am not able to use this chair. I do think the structure of this chair is great especially the movable lumbar support and I wish I could have kept it.