The Kaweco Lunar Sport fountain pen boasts a vintage design. Inspired by a 1935 octagonal shape, the pen is compact when closed, yet full-sized when open. Crafted from durable, lightweight ABS/macrolon plastic, it features a polished stainless-steel nib. The Kaweco logo appears in chrome-colored metal on the cap's end. It uses short international standard cartridges, and an optional pocket clip can be added.