Way more comfy and supportive then any regular office chair.
Car seats are just better, yeah? Especially for long hours of use. And especially the way it still supports your lower back if you lean forward a little (driving/typing position).
Being able to adjust the seat angle and also the back rest angle, independently, is also just stellar.
On this model the foam you actually sit on isn't very comfortable and has some hard edges. The foam on the back rest feels good, though. Fabric quality is good. The chair appears to be solidly built.
You don't seem to be able to remove the head rest once it is on. Who cares??? Well, you can put regular car seat covers on this ...until you put the head rest on. This is a problem, and they need to make it removable.
But, yeah, my back is already felling better.
I'm coming from a Steelcase Leap, which was highly adjustable and built like a tank but was doing my back in.
Long story short, I'm very happy with the purchase (at $1090). You should probably get one too.