TWSBI ECO Cosmo w/Onyx Fountain Pen《Fine》 b6 slim Okayama Denim

Okayama Denim

the dawn sky

It can also be used as a pouch

packaged in an OPP bag

embodies traditional Japanese craftsmanship

TWSBI ECO Cosmo w/Onyx Fountain Pen《Fine》 b6 slim Okayama DenimTWSBI fountain pens are renowned for their high quality and affordability, offering advanced filling mechanisms usually found in more expensive pens. The TWSBI ECO features a high capacity piston filler, a sleek transparent barrel that lets you keep track of your ink level, and a hexagonal screw on cap. How to use the Piston Filler Fountain pen by TWSBI: Simply unscrew the end cap, dip into ink, screw back the end cap, and your done! Ready to write!