You can order this pen with or without an overfeed.
The overfeed is a device designed to extend the width and range of lines you can draw with a flexible nib. It rests above the nib, stores more ink between the nib and overfeed, controls the spread of the two tynes, and lets you draw wider lines for a longer time. Read moreabout our overfeeds.
The version without the overfeed is shipped unless you select the version with an overfeed.
About the reservoir
You can double the volume of ink or paint stored in the pen by removing the reservoir and filling the body. The reservoir provides a double wall of guaranteed protection, which might be what you want, but it does reduce your carrying capacity.