This chair is extremely comfortable and offers great support. I liked the price (used a coupon and took advantage of a sale). I switched out the plastic castors that came with the chair for higher end (rollerblade type) wheels. Better movement of the chair and eliminates the need to have anything between the chair and floor. My only complaint about this chair is the plastic pieces that are inserted to cover the screws on the arms continued to literally pop out of chair. I gave up after a few days and tossed them out. The chair looks just fine without them.
When I first sat in this chair it was the most comfortable desk chair I had ever sat in. I like that the arms go up and down. I'm only 5' 1" and my feet touch the ground comfortably! But I noticed after a few weeks the seat feels hard as though there is not much cushion left. Will need to get a seat cushion to put on top of the seat.