The front part of the chair under my legs went flat after just a few days and I started sliding off the front of the chair. I couldn't figure out why my back hurt so much then I compared my chair to my husband's. He doesn't spend as much time on his computer as I do so his was still inflated. I traded chairs thinking mine was a fluke but no his started going flat after one day of use. We returned both chairs and got a decent replacement. I guess these chairs were designed for someone who never actually sits just reclines back with their feet on the desk...