I'm averaged sized and I thought this chair was comfortable at first but after taking to work and sitting for hours, my back started hurting and I realized the lumbar was too aggressive which made my back feel bruised. I adjusted it to be less up against by back but not much better. I had to remove the back cushion all together and bend the plastic band so it wan't up against the back of the chair. It seemed better but days later my hips started aching like they were bruised and I realized the sides were too rough and not cushioned pressing against my hips. I don't recommend this chair for anyone large or for any long sitting time. It is well made but not soft.
Reasonable price for its type, easy to put together. Seat is comfortable. Materials seem quality for the price point. Specs online didn't provide height range details, so I purchased an XL gas cylinder elsewhere. I didn't need to - the included cylinder probably would have been fine. (I'm 6'2/188cm tall, with slightly shorter legs.)
I would prefer more range for the armrest options, and more control over the resistance offered when leaning back (plus a max lean back setting rather than it then being fixed at that angle at all times), but they're fine for what they are.
My partner and I have a height and build difference. Though he uses the chair majority of the time, I like how I can adjust everything to suit me when needed like the lumbar area, the recline and the armrests. It is comfortable and the mesh back allows air flow where the room it is in tends to be on the warmer side.