I have sat in other mesh chairs and the back tends to be soft and unsupportive of my lumbar. This has a nice additional support so you get the benefit of the mesh seat with a firmer lumbar. I gave it 5 stars for people under 6'. I am 6'3"+ so it is a 4 start chair for me. There are 2 things i wish were improved. The head rest would be perfect if it adjusted 2"-3" higher and I would prefer an extra 1" on the seat pan depth. Neither are deal killers and my disc don't bother me nearly as much as my old traditional chair with a solid seat pan. Despite the areas to improve for people my height I would still buy it again as I have yet to find a good Tall mesh chair.
I have been looking for an office chair for a while. So happy with my decision. Delivery was quick. Chair was easy to assemble. Very comfortable chair. Price is good. Great purchase!