i'm 5'7" and the chair isn't too big or wide for me. now my arms/elbows aren't splayed out uncomfortably at a weird angle like my other more expensive chair. only complaint is that the head rest is too short and functions more like a neck rest. no wonder this chair has almost 5K reviews as of 10/2019. it's cheap and very good/comfortable! ps -- assembly is rather easy. took me about half an hour. the instructions and parts are all labeled appropriately so you can't mess it up.
Very comfortable and long lasting chair. Our second purchase of this chair. The first one lasted five years before the seat plate mechanism gave out. Will be calling to see if one can be purchased so we can still use the first chair.