I was looking for an office chair to use while working from home during CoVid (the dining room chair wasn't cutting it). But given I'm likely to have it for some time, I also didn't want it to be ugly. I read a bunch of reviews trying to figure out which stylish chair might still actually be functional, and I chose this one.  The height adjustment works great, and it does have the ability to tilt or lock the seat (NOTE: you can only lock it in the level position, not tilted).  There is some curvature near the bottom of the seat which doesn't fully support the lumbar area, at least for me. So depending on your needs you may want a very thin pillow if sitting in it for a bit. The foam compresses a lot on the seat when sitting, but after several months it's not wearing down.

On the whole, is this an ergonomically designed desk chair? No. But is it infinitely more attractive and good for varied use? Definitely.