Using this chair is easy. Just place it on a flat surface and let your child sit on it. It's suitable for classrooms, study areas, or any place where your 3rd - 7th grade child needs to sit. When it comes to stacking, you can stack up to 15 chairs together to save space. Be careful not to exceed the 661 lb. weight capacity as it might damage the chair. To maintain the chair, wipe the seat shell and the frame with a damp cloth regularly. The drain holes on the seat shell help in case of any spills. The non - marring plastic floor glides protect your floors, so avoid dragging the chair roughly. The frame has a limited lifetime warranty, but make sure to handle the chair with care to keep it in good condition.