Grunt board was designed by an infantry officer who wanted a rugged and versatile briefing board, unlike the typical duct-tape plexiglass boards traditionally made. The result is a durable, thin, water-resistant briefing board with an elastic-band locking system to prevent unnecessary movement. DISCLAIMER: Due to the manufacturing process, scratches will be present on the boards. This will not impede with the function of the Grunt Board, and you will still be able to draw and brief your missions effectively on the field. Any major scratches that may occur with outdoor usage can be buffed out to maintain a clear drawing surface.