I tested this chair out briefly in the store and thought it was comfortable especially for my size (I'm 5') but after a day of using it at home I'm definitely not a fan. The lumbar support is extremely aggressive and it feels like it is bruising my lower back. The mesh is really rough and scratchy and the headrest placement is awkward/far forward. The seating positions are also awkward -- you're either super upright or super reclined. Thankfully I still have time to return it!
This is an excellent chair for the price. We now have two. Delivered the next day and the assembly is a sinch. If you are looking at the Herman Miller options this is an excellent alternative with huge feature overlap for a fraction of the price. Time will tell if it holds up against the Herman Miller quality.