This chair is wonderful. I sit alot for my work and also have sciatica, and it has helped tremendously. I had previously purchased an office chair online and it was terrible. After 20  minutes or so, my back would hurt, legs would cramp, etc. With this chair, I sit comfortably for long periods of time and no pain. The ONLY negative I see so far is echoed in many of the other reviews - the orange colored stitching is atrocious. I mean, really ugly. But not a deal breaker as far as comfort and quality for the price we paid.