I live in a remodeled garage where the floor is concrete. This chair supports my back and floats around the floor like a dream. It was super simple to assemble and is a recommend from me!
This chair strikes just the right tone for me with the mesh fabric for breathe-ability and also for my back. It didn’t say that it was specifically good for lumbar issues but I love the way the seat is designed and where it hits my back and supports it. Very happy.
Long-term performance is still up for judgment but otherwise this chair works well for me. It has several adjustments to make it suitable for anyone or for different needs. A few facets I would like to see improvements on however: 1. The height adjustment slips so it has to be re-adjusted from time to time. 2. The lumbar adjustment is too limited in the range of adjustment. 3. The various levers for adjustment are often difficult to reach; they should be slightly longer for greater ease. 4. I don't know if there is a better way to design it but the chair curves upward on the sides making for a nasty and painful seat when you hit it at an angle other than straight in front. This is the most expensive chair I ever bought so more expensive chairs may easily be better but I would estimate that less expensive ones are very close in usability at least for the short-term.
I tried every chair in the store before deciding on this one. I was able to leave off the arms because of where I use it. The only problem was inserting the casters. I called the Help line and received suggestions that didn't really work. However I found that by rotating the caster slightly and pushing a few times it would slip in.