Kaweco DIY Sport Fountain Pen – Glow

The 2026 DIY Sport edition glows in the dark. Charge the translucent green body in daylight or under UV light and it shines afterwards – a fun companion in a pencil case or bag, with silver-coloured trims for a cool, otherworldly look.

The kit contains the separate components of a Kaweco Sport, the same parts that are assembled by hand every day at Kaweco's factory in Nuremberg, so you can put together your own pocket fountain pen. Finished, it measures 10.3 cm closed and 12.7 cm with the cap posted, and writes with a German-made steel nib and a royal blue cartridge.

Features

• Build-it-yourself kit of genuine Kaweco Sport parts
• Translucent green, glow-in-the-dark body
• Choice of F, M or B steel nib
• Takes standard international cartridges; royal blue cartridge included
• Pocket size when closed, full size when posted

Specifications

• Material: plastic
• Trims: silver-coloured
• Length: 10.3 cm closed, 12.7 cm posted
• Diameter: 13 mm (without clip)
• Nib: steel, F / M / B (made in Germany)
• Filling system: ink cartridge (royal blue included)
• Packaging: DIY kit box

Compatible with

• Kaweco ink cartridges (standard international short)
• Kaweco Sport mini converter
• Kaweco Sport clips (sold separately)