Ergonomic Kids Desk Chair, 16.5-21 Adjustable Height Mesh Study Chair Gray 30536198Ergonomic Kids Desk Chair: The study chair features an ergonomic backrest that perfectly fits kid's body curve to reduce fatigue caused by sedentary sitting and learning. Besides, the ergonomic desk chair can help children maintain correct sitting posture. Adjustable Seat Height: The seat height of the kids task chair can be adjusted within the range of 16. 5 21 42cm 54cm, capable of catering to people of different ages and heights. Plus swiveling