It looks pretty. It tilts. It swivels. It's fun, but it's not great for 9-10 hour work days. It's not ergonomic. (I'm in PT now thanks to how not ergonomic it is.) There isn't lumbar support and when the tilt is locked, you notice no lumbar support. When it's on tilt mode, it moves so much that, in order to stay actually near my desk without momentum carrying me off, I have to hunch and grab hold of the desk with my hand or the rim of my desk with my feet while I work. 

Three stars because it's pretty and comfy in short bursts, but not good if this is your 9-5 working from home - never to return to an office -chair.