My office chair came with arms that I decided not to put on, for comfort reasons. The seat was ok, but for working remotely, sitting all day, this gel cushion is amazing. It was very affordable. Most cushions I looked at, appeared to be for slim people. I have a woman’s full size hips and wanted a cushion that didnt curve, or have sides. This gel pad is perfect on my office chair, doesn’t move and is very comfortable, and the price made it a perfect bargain, and the best option.