The Kaweco Sport was designed in the 1930s, has barely changed since then, and has earned for itself a worldwide cult following in the meantime.
This refillable rollerball pen has an octagonal design, manufactured from tough ABS/macrolon plastic, and an oversized cap. It has a push button action to advance or retract the refill.
It measures only 10.5cm when closed, but when the cap is mounted on top of the barrel it becomes a 13cm, standard-sized pen, hence the slogan, ‘small in the pocket, large in the hand’. (A strapline to conjure with, that.)
Prefer a fountain pen? Check out the Kaweco Classic Sport Navy Fountain Pen, also available from the LRB Store.