Esterbrook Niblet
The Niblet, "Small in size, big on character", is a beautifully vintage-styled pocket pen from Esterbrook. The 'pocket pen' design means much of the pen disappears into the cap when it's capped for carrying, extending to a longer and more comfortable size when in use. It uses the same sized nib as the Estie, meaning you get the convenience of a pocketable fountain pen, but with all the same nib options as Esterbrook's larger pens.