Easy to put together and very comfortable. Great that the arms fold up so the chair can also be pushed all the way under the desk. 

Main problem is that the back-rest is fairly low. Fits me (5'4") perfectly, but my partner (5'11' with a long torso) couldn't use it, as the headrest then was digging into his shoulders. Also found the locking mechanism on the backward tilt wasn't very tight, so there was still a little movement when this was locked.

Overall great if you are, like me, fairly averagely proportioned, but worth bearing in mind when buying!