TWSBI Eco Fountain Pen -Cosmos Blue Onyx

₹7,645.00

Nib Size

Fine

Medium

Quantity

TWSBI ECO

The TWSBI ECO is a practical, writing‑focused fountain pen designed for consistency, capacity, and everyday use. Made in Taiwan, it is known for delivering features typically found in higher‑priced pens.

What sets the ECO apart is its piston‑filling mechanism, which allows ink to be drawn directly from a bottle and provides a large ink capacity. The transparent barrel makes it a demonstrator pen, letting you see both the ink level and the internal mechanism — especially appealing when used with different ink colours.

With a reliable steel nib and balanced construction, the ECO is well suited for journaling, long writing sessions, and daily note‑taking. It’s a pen built for writers who value function, visibility, and uninterrupted writing.

TWSBI ECO — Curated By SKRIVA

The TWSBI ECO is part of SKRIVA’s Everyday Carry selection because it brings transparency, capacity, and practicality together in a way that supports regular, uninterrupted writing.

Manufactured in Taiwan, the ECO is designed with a clear focus on function and longevity. At this price point, it offers a highly workable piston‑filling mechanism, allowing ink to be drawn directly from a bottle — a feature usually reserved for more expensive pens. This encourages a more intentional relationship with ink and writing.

The transparent barrel makes the ECO a demonstrator pen, allowing the internal mechanism and ink level to remain visible at all times. This not only adds to its visual appeal, but also makes the pen especially engaging when used with different ink colours.

The barrel holds a large volume of ink (approximately 1.7–1.8 ml), reducing the need for frequent refilling and making the ECO particularly well suited for journaling, long‑form writing, and extended note‑taking. The design is utilitarian and honest, favouring clarity and usability over ornamentation.

Chosen by SKRIVA, the ECO is a pen for writers who enjoy seeing their tools at work — dependable, transparent, and designed to be used often.

Condition New

Brand TWSBI

Type Fountain Pens

Demonstrator Yes

Body Material Resin

Cap Type Screw-cap

Compatible inks & refills Bottled ink

Filling Mechanism Piston

Grip Material Resin

Nib Size Extra-Fine, Fine, Medium, Broad, 1.1mm Stub

Nib Material Steel

Choosing the Right Nib

Nib choice shapes both the character of your writing and how the pen feels in use.

TWSBI nibs generally follow Western sizing, offering a balance between smoothness and control. They provide clear line definition without feeling rigid.

If you prefer smaller handwriting or crisp lines, Fine is a strong starting point.
Medium offers a fuller, smoother line that suits relaxed writing and longer sessions.

There is no right or wrong choice — only what suits how you write today.

Samples for all the nib sizes

SKRIVA guidance:
If you’re unsure, Fine is the safest place to begin. Writing changes over time — and your nib choice can change with it.

TWSBI Eco Fountain Pen -Cosmos Blue Onyx

TWSBI ECO — Curated By SKRIVA

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