A motivated teacher or employee can go through multiple whiteboard markers in a week. Not only is this bad for the environment, but it is also economically inefficient. Japan has a wide variety of refillable whiteboard markers, and JetPens was especially attracted to the Inkga-e for its ergonomic body shape and quality. The marker can be easily refilled with new ink cartridges. Black, blue, red and green marker colors and ink refills are available.