TWSBI ECO Fountain Pen - Matcha Limited Edition

TWSBI ECO Matcha Fountain Pen – a fresh, green take on the modern piston-filler

Brewed for 2025, the ECO Matcha wraps TWSBI’s best-selling demonstrator in a rich pistachio-green cap, finial and piston knob, while the crystal-clear acrylic barrel keeps your ink level on full display and adds minimalist flair to any workspace.

Built around the same sealed piston system found in TWSBI’s premium models, the ECO drinks up ≈ 1.76 ml of bottled ink in a single twist—three times more than a standard cartridge—so you can journal, plan or sketch for pages before refilling.

Five polished stainless-steel nib options (EF, F, M, B, 1.1 mm stub) let you customise line width and shading. An inner cap seal keeps the feed primed between sessions, ensuring fast start-ups and a satisfyingly smooth, slightly wet flow.

True to the ECO philosophy (“economical”), every pen ships with TWSBI’s maintenance kit—silicone grease and a precision wrench—so you can keep the piston gliding smoothly for years and learn exactly how your pen works in the process.

Lightweight (≈ 132 mm capped, 12.5 mm in diameter) and balanced for long writing sessions, the Matcha edition joined the line-up in June 2025, delivering premium filling technology, bold colour and hands-on serviceability at an entry-level price.

Quick-view specs 

• Model: TWSBI ECO Matcha demonstrator fountain pen

• Filling system: integrated piston — ≈ 1.76 ml capacity

• Nib sizes: EF | F | M | B | 1.1 mm stub, stainless steel

• Materials: clear acrylic barrel, green resin cap/knob, chrome trim

• Included accessories: silicone grease, TWSBI wrench, presentation box

• Compact Descriptions: green fountain pen, affordable piston-fill fountain pen, TWSBI ECO Matcha, transparent demonstrator pen, daily writer fountain pen

Harness the vibrant Matcha hue and generous ink capacity to add character—and plenty of mileage—to your everyday writing.