The Tombow AirPress leverages the energy from each push of the cap to inject air pressure into the ink cartridge allowing the pen to write on challenging surfaces. The pen is excellent for construction people or other people working outdoors since it can write at extreme angles, upside down, on wet paper, and in cold weather. It is similar to the Uni-ball Power Tank Ballpoint Pen
, except that this pen ingeniously uses the retraction method to create air pressure.
Pen has a strong, wire pocket clip and features a loop that allows you to attach it to lanyards and key chains. Multiple body colors and black refills are available.