I picked up this chair largely because I had just moved and needed a new chair, what I received was a complete shift in the way I sit, the thick, firm foam that makes up the sitting surface is execlent and doesn't get uncomfortable even after long days of sitting 12+ hours. While back support is somewhat a weak spot being only for the lower back I only find minor irritation in my upper back, and that is largely due to a sub optimal height on my desk, making my current laptops based workstation somewhat impractical for what I need to be doing. While height adujust is present it isn't as granular as I feel it should be, but aside from that, and a scratch that occurred while putting it together, it's constructed excellently, the wheels have some tracking issues on carpet but nothing too horrible. For just over $100 I don't think I could have found a better choice. I await the arrival of my standing desk so I may return to full productivity once again!!