The arm height is not adjustable and for me the back is too far away/back from the seat - that distance is not adjustable either. The seat pad is pretty comfy and it's lightweight. If it wasn't such a pain to disassemble and repackage I'd probably return it.
I would give this chair 5 stars but since I have only had it for 2 weeks I don't think I can truly determine if its a 5 star. I have to see how it holds up. Its really nice and very easy to assemble. Appears good quality for the money.