The kneeling chair promotes healthier positioning for your body which relieves your spine of the compression when sitting in the chair. With comfortable black fabric seat and knee rest, this chair will allow you to sit in a position that encourages better breathing through your diaphragm and increases blood circulation. Restore your body’s natural posture with this ergonomic kneeling chair. Kneeling stool offers excellent ergonomic support Adjustable knee height allows for users of different size Ergonomic design eases the hip forwards and encourages an upright posture Black fabric seat and knee platform provide comfort for long periods of time Pneumatic seat height adjustment Dimensions: 17.5 inches (W) x 26.5 inches (D) x 20 to 24 inches (H) Nicer Interior Ergonomic Drafting Chair - Black