This is the On The Run Flowpen Marker that features ultra smooth alcohol based ink. The Flowpen has a pump action valve that gives you control of the flow of ink. The Flowpen also has special 15mm nib that helps the marker write smoothly. The nib is also replaceable. This marker is REFILLABLE.
This is the pocket version of the regular Flowpen. It has the same 15mm nib and a shorter body that makes it easily fit in your pocket.