This chair is comfortable. The assembly of this chair is a bit tricky. There is a post that fits into base and the chair part that requires the removal of a black cap. The black cap is put on tightly. I have yet to be able to get the cap off. The cap holds in the gas that allows the chair to move up and down. This is the only problem I have with the assembly. Once this cap is off the assembly will be finished.

Pros: This is a great value. It is well made. Cushion of the chair is fantastic. 
Cons: Putting the chair together is difficult given one part where there is removal of a black cap. Very difficult to remove.