The chair is very comfortable and the adjustable lumbar support is a real plus. The arm rests are adjustable 3 positions which is great. I would recommend this chair.
My boss got one of these back in the pandemic to WFH. He bought several more for the office when we returned and they've been great so I picked one up for myself. Little to no fatigue through out the day and are very comfortable for a long time.
After a week the Seat stretched so much & sags down so far that it's not comfortable to sit in. Leaning back will sometimes cause a loud pop like the plastic is being popped out of place. Avoid it it won't last long.