The XS Pocket Fountain Pen, designed by ēnsso, was conceived with mobility in mind. It is one of the smallest fountain pens in the world, but it grows into a regular size pen when posted - making it ideal for everyday carry. In addition, the cap is secured by o-rings, allowing a fast uncapping for quickly jotting down your ideas.
The XS is available to pre-order on Kickstarter at 50% off from the future retail price.
My thanks to ēnsso for sponsoring The Pen Addict this week.