The chair is extremely comfortable (we've ordered 2) but we have to return this one because of a very small manufacturing defect where the headrest affixes to the seat back - a screw receptacle embedded in the seat back had faulty threading. The chair had to be completely disassembled and returned. Not a fun task.
I have herniated L4/L5/S1 disc. I’ve been working from home since July and needed something with more support rather than just an upholstered kitchen chair. This had good reviews so I took the chance. Awful! It started with leg cramping a day or two after using. Figured I needed an adjustment period. Now I’m having a complete sciatic nerve attack and can only lay down to be comfortable. Even with my back issues I’ve never had something nearly this bad. I would just avoid this one.
Seat is to narrow could be a little wider. And sitting an hour or so the front the support is hard on my tights. I would recommend going to an upscale model. I like the mechanism for adjusting the seat and back.
The chair itself is very comfortable. It's lightweight and moves around easily. The armrests are pretty firm but have a little bit of cushioning. My only complaint is the headrest. It can be adjusted up/down and rotated but even at its highest setting it is too low for anyone taller than probably 5' 8" unless you are reclining in the chair. There is a modification you can make to the headrest to bring it up another inch or 2 but it's not easy: you have to unscrew the bracket that's connected to the back of the headrest and flip it upside down (change it from a smiley face to a frown). To do so you have to unscrew 2 screws that are behind the mesh and the only way I was able to do it was to stick a narrow screwdriver through one of the holes in the mesh. Truth be told you don't even really use a headrest for normal office chair use and you can choose to not install it at all.