I'm 5'9" and the headrest/neck rest digs into my shoulder blades. It's such a major design flaw. The good thing about Staples is that you have 30 days to return the chair no questions asked. Many people give it great reviews so it may be a good chair for you.
This chair is probably the most comfortable work chair I have ever used. It is comfortable; it adjusts to where I need it; and most of all it is a little higher than most chairs so I can finally have my feet on the floor and my knees squared off.