The heavy duty, high power clipboard mechanic on the outer top and the inner side makes up the patented design of the PilotsReference Binder™. Work the papers of your current flight on top of the closed binder. Open the binder to work the papers of your consecutive flight while you have all forms, weather information and NOTAMs next to you for instant access. Never run out of pens and have your favorite pen at your favorite spot at all times. The PilotsReference Binder™ features 9 pen holders at all possible places.