I really love this chair! I work from home and I did not want to spend hundreds on a chair.  I searched and searched and this one called my attention when reading the Specs which stated (Recommended Daily Usage	Heavy Usage (Up to 8 Hours).  I have sat for hours and yes the chair is comfortable, supports my back, no soreness, and no stiffness in my legs...no aches when sitting for a long period of time.  Happy with this purchase!