Very comfortable which is why it is getting 3 stars and not 1 but the screw holes for the seat aren't level so the chair tilts to the back right. It is just enough to annoy me but not enough to take it apart to return the chair. At least it is still comfy.
This chair has great support. My previous chair hurt my back and after just a couple of days it feels much better with this chair! Would recommend this chair for someone who sits for 5 or more hours.