This chair works well for me, but the comfort of chairs can depend on your size and shape (I'm 5'6, 120 lbs, with a long torso, so the lumbar support hits me just right). A tall or large person might not feel the same amount of comfort.Main points:[+] This is a support chair, not a squishy chair. The seat is firm and because the fabric is made of mesh netting with little holes that are hard to clean, it's not a chair for slobs. If you eat lunch in your chair and rain down little bits of sandwich while typing, this is not the chair for you. If you want a chair that's like sinking into your couch for a nap, this is not the chair for you. Actually, most ergonomic chairs are probably not it.[+] The seat tension control doesn't do a ton, so if the most important thing in a chair to you is the ability to recline or tilt forward, this isn't the chair for you.[+] Alternatively, if you're like me and you find that most chairs don't support the line of your back, so that you end up with a gap between you and the back support, this is a good chair. The mesh back supports your back without being stiff. Once you get the lumbar support calibrated, it's really comfortable. But again, the lumbar support pushes up and down, not forward and back. If you're looking for that chair that's going to shove you to the end of the seat, this isn't it.[+] There are a bunch of chairs with this design offered by multiple vendors. You take your chances with all of them. I'm happy with this one: the arm rests raise and lower, the lumbar support raises and lowers, the seat chair has a tension knob, the head rest raises and lowers. Is it customizable to a herman miller level? No, but it's also 1/5 the price. You really do get what you pay for, and for the price, this as adjustable as your money will be.[+] The construction is good enough. I can understand how a handful of people might end up with parts that don't quite fit together no matter how hard you turn the allen wrench. If you're mentally prepared for that and are willing to send back the chair for a replacement, then don't worry about the negative reviews about quality. Not every chair that comes off a factory line is a winner, and this is a factory chair at a factory mass produced price.[+] The chair comes with a pair of gloves. Put them on and wear them while piecing the chair together. You'll be surprised at the grease that's on the gloves when you're finished.[+] Putting the chair together was extremely easy and can be done by a single person. Engineering skill doesn't matter, but patience (and not having a quick temper) does. Read the instructions, prepare the bolts ahead of time so you're not trying to put the washer on while you're holding the seat in the air. Start all the bolts so they hold, but don't tighten until they're all in. Make sure the metal bits are flat against the seat when you tighten the allen wrench, especially the arm rests. Once the metal seat adjuster piece goes on, the seat becomes pretty heavy and unwieldy, so make sure to get the arm rests on straight first.