Today is my last day in a 3 day conference. I'm in the chair 8 hours a day, and I haven't hurt once while sitting in the chair. I feel supported and comfortable, which is a challenge for me on the best of days! The only thing I would change is making the design of the arm rests more in line with the design of the chair. It's so sleek and nice looking that the arms look odd. However, I love how they are customizable to your arm height and position. Overall, great purchase.