The Tombow AirPress pen pressurises the refill each time the point is extended to write. The mechanism compresses the air within the barrel as the push button is pressed, giving up to 150 metres of pressurised writing allowing writing at any angle - even upside down without the ink flow faltering. The AirPress Pen writes on wet paper, even at minus 5 degrees Celcius, overhead and in dusty environments.

reddot design award winner 2010.