The stool is really comfortable. My back doesn't bother me anymore at all!. I work out of my house and sometimes spend 6-7 hours a day sitting in it. My only complaint is the size. The stool sits on wheels which cause the seat to be a little higher than what is truly comfortable. Initially, I found that I constantly needed to lean over to see the computer screen and reach the keyboard. I've propped them, so there are no longer problems, but the additional height still causes an issue in that I can't push the chair completely under the desk I'm done working.