Kaweco's Classic Sport Fountain Pen in White. Kaweco, founded as Heidelberger Federhalterfabrik in 1883, began producing pocket fountain pens in 1912. This design dates from 1935 — when closed it is small enough to fit comfortably in a pocket or purse, and when in use the pen sits well in the hand and is a genuine pleasure to write with. Measures 105mm closed, 133mm in use. Provided with a single Royal Blue cartridge, replacements are available in a range of colours. Compatible with Kaweco's Sport Clips and Sport Cases, as well as the Kaweco Piston Filler, for those who prefer to use bottled ink and use fewer single-use plastic items. Provided with a single Royal Blue Kaweco Ink Cartridge, replacements are available in packs of 6, in Red, Yellow, Green, Blue, Light Blue, Grey and Black.