I picked up the grey bonded leather chair a few months ago and it has definitely made a difference in having to sit at a desk for hours at a time. The chair is comfortable and the rollers move freely. If you need added lumbar support I recommend placing a small pillow at the small of your back.
Ordered 2 chairs one came open with no hardware. Had to wait for replacement chair the replacement chair is missing a screw for the bottom so the chair leans...Overall without that mess the chairs are nice & comfy.
The lumbar sides are not sewn evenly left side support is approx 1.5 longer than the right side support. Left side is short stubby looking and right side long and narrow.