The Kaweco Sport is another best buy for your EDC if you like to write with nibs and ink. It is only 4 inches long with the cap screwed shut, but slightly over 5 inches “opened up”. These pens have a long history in Germany and come in different colors and materials. They write smoothly and reliably, despite being so inexpensive. I prefer the B nibs. Kawecos use international short cartridges. I find them to be extremely well shaped due to the thin grip section and the thick rear formed by the posted cap that cradles between the thumb and forefinger.