I had purchased (from another office supply store) a "luxury" office chair that ran me more than $200. I had tried it out in the store. At home though once set up in my office the chair would not stay elevated. I'd set it to the height I wanted and it would slowly sink. I also found that I had to add pillows to support my lower back. I spend sometimes up to 9 or 10 hours in that chair a day. So I decided to go to Staples which usually is my go-to supply store (but it farther away from me). I found this chair tried it out and brought it home. I'm 5'10" so I need a chair with a seat deep enough so I don't feel like my thighs are hanging off the edge. This chair fits perfectly. And the mesh portion of the back is super-comfortable and curves toward my back to support it firmly. The height and tilt adjustments work beautifully and I haven't experienced any slipping. The seat cushion is comfortable for hours. And this chair looks smart. Highly recommend it.