You have to remember that this seat cushion adds cushion to your seat. In sum, it works as if it's a booster seat. I recommend you use it on the chair with extra height, otherwise the back of the chair would be too low for you to support your back. Otherwise, it does what it's supposed to do. It saves your hip to deal with your weight pressure as it's tail bones are saved. However, for the extended period of time, it may deconstruct in its form so I recommend your taking a break once in a while See full review