Ergonomic Home Office Chair: Equipped with a curved backrest, this chair perfectly fits the curve of human body and provides maximum support for your waist. In addition, the soft padded armrest can greatly relax your hands and arms when you want to have a rest after typing for hours. Adjustable Height & Rocking Function: You can raise or lower the seat height (17"-20.5") according to the height of desk or your sitting position. Besides, the mid back task chair with rocking function can be tilted from 90° to 115°, enabling you to lean against the back for additional relaxation.