It works but the screws and overall assembly design is absurd. My chair arm keeps popping off because I can't screw it in any tighter due to the terrible design of the area it needs to be screwed in. It takes 2 people to assemble.  One to hold the piece in an awkward position and another to try and screw it in with an Allen wrench as quickly as possible. 
Is it comfy? It works. You get what you pay for.