The Writing Instrument for a Walkabout.
Weatherproof pen Our Weatherproof Pen writes at any angle in all weather conditions. Combined with The Weatherproof Travel Journal you can write upside down in a rainstorm. Even writes underwater or in outer space. Used on manned spaceflights. Ink is permanent. Works in extreme cold (-50 degrees F) or heat (+400 degrees F). Writes over grease, fingerprints, and whiskey stains.