Pretty happy with this for the price.  Bought to replace a wooden dining chair I had been using for occasional working from home days - couldn't keep going with that now we're working at home indefinitely due to Covid-19 - so obviously vastly more comfortable than before!

Easy to assemble, although self-tapping screw to secure headrest wouldn't screw in - but not needed as it's pretty secure as it is.  Lever for up/down is at a bit of a funny angle, but works.  Overall, it doesn't feel as solid as some more premium chairs that I have used in the office, so will have to see how robust it is in the longer term.