I'm 5'3 and a smaller person. I was worried about the headrest being uncomfortable but it's not at all plus you can remove it completely if you don't like it. The mesh is very sturdy and the height adjustment of the chair works great. You should also buy the 3 year warrenty they offer bc it's still mesh chair. That way if it breaks you get a new chair! Very happy with this purchase.
What a great chair! The cat ruined my old desk chair so I was concerned she'd go after this one ... but nope she leaves it alone. Only complaint is the store put the armrests on backwards had to fix when I got it home but that was fairly easy to do. Overall very very comfortable!
The assembly is easy for most parts. The head rest is a little tricky. When finished the seat is really comfortable. Ergonomically. But pay attention to one common thing of this kind of chairs the plastic is hard it could form some hard edges on the seat and hard support on the side of the head rest.