I’ve a Nice Executive office chair adjustable arms that is darkish gray and black which has a wheeled base and which includes a lot of adjustable positioning. It has levers that you can; lean back, slide ahead for depth of your seat, alter the angle of your seat, raise or lower the peak, raise or lower the arms, and alter the lumbar support. You may also flip the angle of the arms or remove them. I recently received this chair and so I’ve hardly used it. Additionally, it has thick cushy seat padding.