This chair is pretty awful. I cannot figure out what my big problem is, but my tailbone KILLS after a day in this chair. I broke down and spent $60 on a seat cushion and still I can barely stand up at times from tailbone pain. I have worked in offices for over 20 years, I have never had the pain this chair gives me. The first hour it felt soft and cushy. But the next day, it was terrible. It was really easy to assemble, but the lack of ability to change the tilt is far worse than I anticipated.