So far I like everything about the chair. It was quick and easy to assemble and does exactly that it's supposed to do. The mesh fabric is especially nice. I didn't need the head rest or arm rests so I can't comment on those aspects. The chair is perfect for my small home office.
This is the best desk chair that I have ever had! The mesh backing gives lots of support and is also cool since air can get through. I love the size of the chair and the arm rests are comfortable and the right height.
This chair is quite comfortable with the head rest for my height. My husband sat in it and didn't feel as comfortable. He felt the metal sides of the seat. I would recommend checking it out at the store before you purchase.