TWSBI ECO and ECO-T Fountain Pens

TWSBI ECO and ECO-T fountain pens are two of the most popular entry-level options for fountain pen enthusiasts. Known for their reliable piston-filling systems and affordable price, these pens offer a smooth writing experience without compromise. The ECO-T features a triangular grip and a refined cap design for added ergonomic comfort — ideal for those who write often or for long sessions.

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TWSBI ECO fountain pen in Persian Green with a transparent barrel, featuring a fine nib and piston filling mechanism.
TWSBI
ECO (Persian Green) - Fine
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$59.99
X
TWSBI ECO fountain pen in Persian Green with a transparent barrel, featuring a fine nib and piston filling mechanism.

ECO (Persian Green) - Fine

$59.99

TWSBI

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TWSBI ECO fountain pen in Persian Green with a transparent barrel, featuring a medium nib and piston filling mechanism.
TWSBI
ECO (Persian Green) - Medium
-
$59.99
X
TWSBI ECO fountain pen in Persian Green with a transparent barrel, featuring a medium nib and piston filling mechanism.

ECO (Persian Green) - Medium

$59.99

TWSBI

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TWSBI ECO-T (Saffron) fountain pen shown capped and uncapped, featuring a piston filling mechanism, medium steel nib, and orange accents.
TWSBI
ECO-T (Saffron) - Medium
-
$59.99
X
TWSBI ECO-T (Saffron) fountain pen shown capped and uncapped, featuring a piston filling mechanism, medium steel nib, and orange accents.
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ECO-T (Saffron) - Medium

$59.99

TWSBI

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TWSBI ECO-T (Mint Blue) - Extra Fine Fountain Pen
TWSBI
ECO-T (Mint Blue) - Extra Fine
-
$59.99
X
TWSBI ECO-T (Mint Blue) - Extra Fine Fountain Pen

ECO-T (Mint Blue) - Extra Fine

$59.99

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TWSBI ECO-T (Mint Blue) - Broad Fountain Pen
TWSBI
ECO-T (Mint Blue) - Broad
-
$59.99
X
TWSBI ECO-T (Mint Blue) - Broad Fountain Pen

ECO-T (Mint Blue) - Broad

$59.99

TWSBI

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TWSBI ECO (Amazonite) - Extra Fine fountain pens, featuring clear barrels and mint-green marbling, showcasing a piston-filling mechanism and stainless-steel nib.
TWSBI
ECO (Amazonite) - Medium
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$68.00
X
TWSBI ECO (Amazonite) - Extra Fine fountain pens, featuring clear barrels and mint-green marbling, showcasing a piston-filling mechanism and stainless-steel nib.
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ECO (Amazonite) - Medium

$68.00

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TWSBI ECO fountain pen in Caffe/Bronze, featuring a fine nib, clear barrel, and piston fill mechanism. One pen is capped, the other uncapped, revealing the nib.
TWSBI
ECO (Caffe / Bronze) - Fine
-
$95.00
X
TWSBI ECO fountain pen in Caffe/Bronze, featuring a fine nib, clear barrel, and piston fill mechanism. One pen is capped, the other uncapped, revealing the nib.
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ECO (Caffe / Bronze) - Fine

$95.00

TWSBI

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TWSBI ECO fountain pen in Indigo Blue/Bronze, Extra Fine nib, showcases a clear barrel with piston-filling mechanism. One pen is capped, highlighting its sleek design.
TWSBI
ECO (Indigo Blue / Bronze) - Extra Fine
-
$95.00
X
TWSBI ECO fountain pen in Indigo Blue/Bronze, Extra Fine nib, showcases a clear barrel with piston-filling mechanism. One pen is capped, highlighting its sleek design.

ECO (Indigo Blue / Bronze) - Extra Fine

$95.00

TWSBI

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TWSBI ECO (Cerulean) - Medium fountain pen with clear barrel, turquoise cap, and stainless-steel nib, featuring a piston-fill mechanism for high ink capacity.
TWSBI
ECO (Cerulean) - Medium
-
$59.99
X
TWSBI ECO (Cerulean) - Medium fountain pen with clear barrel, turquoise cap, and stainless-steel nib, featuring a piston-fill mechanism for high ink capacity.

ECO (Cerulean) - Medium

$59.99

TWSBI

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TWSBI ECO (Smoke / Rose Gold) - Fine Fountain Pen
TWSBI
ECO (Smoke / Rose Gold) - Fine
-
$95.00
X
TWSBI ECO (Smoke / Rose Gold) - Fine Fountain Pen
/ 1 / 2

ECO (Smoke / Rose Gold) - Fine

$95.00

TWSBI

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TWSBI ECO-T (Saffron) fountain pen shown capped and uncapped, featuring a piston filling mechanism, stub 1.1mm steel nib, and orange accents.
TWSBI
ECO-T (Saffron) - Stub 1.1mm
-
$59.99
X
TWSBI ECO-T (Saffron) fountain pen shown capped and uncapped, featuring a piston filling mechanism, stub 1.1mm steel nib, and orange accents.
/ 1 / 2

ECO-T (Saffron) - Stub 1.1mm

$59.99

TWSBI

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new TWSBI ECO fountain pen in Serpentine colourway with copper accents, displayed on a natural wooden surface
TWSBI
ECO (Serpentine / Bronze) - Fine
-
$105.00
X
TWSBI ECO fountain pen in Serpentine colourway with copper accents, displayed on a natural wooden surface
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ECO (Serpentine / Bronze) - Fine

$105.00

TWSBI

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new TWSBI ECO (Espresso/Bronze) - Extra Fine fountain pens showing clear barrels, one uncapped to display the nib and piston-filling mechanism, with brown caps and gold trim.
TWSBI
ECO (Espresso / Bronze) - Fine
-
$95.00
X
TWSBI ECO (Espresso/Bronze) - Extra Fine fountain pens showing clear barrels, one uncapped to display the nib and piston-filling mechanism, with brown caps and gold trim.
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ECO (Espresso / Bronze) - Fine

$95.00

TWSBI

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ECO (Irish Green/Onyx) - Extra Fine fountain pen with a clear barrel, green trim, capped and uncapped, revealing the black steel nib and piston fill mechanism.
TWSBI
ECO (Irish Green/ Onyx) - Fine
-
$95.00
X
ECO (Irish Green/Onyx) - Extra Fine fountain pen with a clear barrel, green trim, capped and uncapped, revealing the black steel nib and piston fill mechanism.
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ECO (Irish Green/ Onyx) - Fine

$95.00

TWSBI

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ECO (Irish Green/Onyx) - Extra Fine fountain pen with a clear barrel, green trim, capped and uncapped, revealing the black steel nib and piston fill mechanism.
TWSBI
ECO (Irish Green/ Onyx) - Stub 1.1
-
$95.00
X
ECO (Irish Green/Onyx) - Extra Fine fountain pen with a clear barrel, green trim, capped and uncapped, revealing the black steel nib and piston fill mechanism.
/ 1 / 2 / 3

ECO (Irish Green/ Onyx) - Stub 1.1

$95.00

TWSBI

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TWSBI ECO fountain pen in Indigo Blue with bronze trim, featuring a clear barrel and visible piston mechanism. Includes one capped and one uncapped pen, fine nib.
TWSBI
ECO (Indigo Blue / Bronze) - Stub 1.1
-
$95.00
X
TWSBI ECO fountain pen in Indigo Blue with bronze trim, featuring a clear barrel and visible piston mechanism. Includes one capped and one uncapped pen, fine nib.

ECO (Indigo Blue / Bronze) - Stub 1.1

$95.00

TWSBI

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TWSBI ECO (White/ Rose Gold) - Broad Fountain Pen
TWSBI
ECO (White/ Rose Gold) - Broad
-
$95.00
X
TWSBI ECO (White/ Rose Gold) - Broad Fountain Pen

ECO (White/ Rose Gold) - Broad

$95.00

TWSBI

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ECO-T (Clear) - Extra Fine fountain pen with transparent barrel, visible nib, piston ink-filling mechanism, and clear cap with metal clip. Designed for improved grip technique.
TWSBI
ECO-T (Clear) - Extra Fine
-
$59.99
X
ECO-T (Clear) - Extra Fine fountain pen with transparent barrel, visible nib, piston ink-filling mechanism, and clear cap with metal clip. Designed for improved grip technique.
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ECO-T (Clear) - Extra Fine

$59.99

TWSBI

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ECO-T (Yellow Green) - Fine fountain pen with clear barrel showing piston mechanism; cap in bright lime/yellow with chrome clip and TWSBI branding.
TWSBI
ECO-T (Yellow Green) - Fine
-
$59.99
X
ECO-T (Yellow Green) - Fine fountain pen with clear barrel showing piston mechanism; cap in bright lime/yellow with chrome clip and TWSBI branding.
/ 1 / 2

ECO-T (Yellow Green) - Fine

$59.99

TWSBI

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TWSBI ECO (White) - Broad: A clear demonstrator fountain pen, featuring a silver-trim, piston-fill mechanism, with cap on and off, revealing the steel nib and ink reservoir.
TWSBI
ECO (White) - Broad
-
$59.99
X
TWSBI ECO (White) - Broad: A clear demonstrator fountain pen, featuring a silver-trim, piston-fill mechanism, with cap on and off, revealing the steel nib and ink reservoir.

ECO (White) - Broad

$59.99

TWSBI

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TWSBI ECO (Glow Purple) - Broad fountain pen with clear barrel, featuring a piston-filling mechanism; one pen capped, the other uncapped showing the steel nib.
TWSBI
ECO (Glow Purple) - Broad
-
$59.99
X
TWSBI ECO (Glow Purple) - Broad fountain pen with clear barrel, featuring a piston-filling mechanism; one pen capped, the other uncapped showing the steel nib.
/ 1 / 2

ECO (Glow Purple) - Broad

$59.99

TWSBI

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TWSBI ECO (Glow Green) - Medium fountain pen, shown with clear barrel, uninked on left and filled with black ink on right, featuring a piston-fill mechanism.
TWSBI
ECO (Glow) - Medium
-
$59.99
X
TWSBI ECO (Glow Green) - Medium fountain pen, shown with clear barrel, uninked on left and filled with black ink on right, featuring a piston-fill mechanism.

ECO (Glow) - Medium

$59.99

TWSBI

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new TWSBI ECO fountain pen in Serpentine colourway with copper accents, displayed on a natural wooden surface
TWSBI
ECO (Serpentine / Bronze) - Medium
-
$105.00
X
TWSBI ECO fountain pen in Serpentine colourway with copper accents, displayed on a natural wooden surface
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ECO (Serpentine / Bronze) - Medium

$105.00

TWSBI

More Details →
new TWSBI ECO (Espresso/Bronze) - Extra Fine fountain pens showing clear barrels, one uncapped to display the nib and piston-filling mechanism, with brown caps and gold trim.
TWSBI
ECO (Espresso / Bronze) - Medium
-
$95.00
X
TWSBI ECO (Espresso/Bronze) - Extra Fine fountain pens showing clear barrels, one uncapped to display the nib and piston-filling mechanism, with brown caps and gold trim.
/ 1 / 2 / 3

ECO (Espresso / Bronze) - Medium

$95.00

TWSBI

More Details →
TWSBI ECO fountain pen in Caffe/Bronze, featuring a extra fine nib, clear barrel, and piston fill mechanism. One pen is capped, the other uncapped, revealing the nib.
TWSBI
ECO (Caffe / Bronze) - Extra Fine
-
$95.00
X
TWSBI ECO fountain pen in Caffe/Bronze, featuring a extra fine nib, clear barrel, and piston fill mechanism. One pen is capped, the other uncapped, revealing the nib.
/ 1 / 2 / 3 / 4

ECO (Caffe / Bronze) - Extra Fine

$95.00

TWSBI

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TWSBI ECO fountain pen in Creme/Rose Gold, featuring a clear acrylic body, Broad steel nib, and piston filling mechanism, showcasing elegant rose-gold-tone trim.
TWSBI
ECO (Creme / Rose Gold) - Broad
-
$95.00
X
TWSBI ECO fountain pen in Creme/Rose Gold, featuring a clear acrylic body, Broad steel nib, and piston filling mechanism, showcasing elegant rose-gold-tone trim.
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ECO (Creme / Rose Gold) - Broad

$95.00

TWSBI

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TWSBI ECO (Cerulean) - Fine fountain pen with clear barrel, turquoise cap, and stainless-steel nib, featuring a piston-fill mechanism for high ink capacity.
TWSBI
ECO (Cerulean) - Fine
-
$59.99
X
TWSBI ECO (Cerulean) - Fine fountain pen with clear barrel, turquoise cap, and stainless-steel nib, featuring a piston-fill mechanism for high ink capacity.

ECO (Cerulean) - Fine

$59.99

TWSBI

More Details →
ECO-T (Clear) - Stub 1.1mm fountain pen showcasing a transparent barrel with visible piston filling mechanism and pronounced grip for enhanced writing technique.
TWSBI
ECO-T (Clear) - Stub 1.1mm
-
$59.99
X
ECO-T (Clear) - Stub 1.1mm fountain pen showcasing a transparent barrel with visible piston filling mechanism and pronounced grip for enhanced writing technique.
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ECO-T (Clear) - Stub 1.1mm

$59.99

TWSBI

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TWSBI ECO (Transparent Blue) - Broad fountain pen with clear barrel, translucent blue cap and tail, featuring a piston-fill mechanism for visible ink movement.
TWSBI
ECO (Transparent Blue) - Broad
-
$59.99
X
TWSBI ECO (Transparent Blue) - Broad fountain pen with clear barrel, translucent blue cap and tail, featuring a piston-fill mechanism for visible ink movement.
/ 1 / 2

ECO (Transparent Blue) - Broad

$59.99

TWSBI

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ECO-T (Blue) - Fine: Clear-barrel, piston-filling fountain pen with a bright blue cap and end knob, featuring a stainless nib and TWSBI logo on the cap band.
TWSBI
ECO-T (Blue) - Fine
-
$59.99
X
ECO-T (Blue) - Fine: Clear-barrel, piston-filling fountain pen with a bright blue cap and end knob, featuring a stainless nib and TWSBI logo on the cap band.
/ 1 / 2

ECO-T (Blue) - Fine

$59.99

TWSBI

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new ECO (Carrara / Onyx) - Stub 1.1
TWSBI
ECO (Carrara / Onyx) - Stub 1.1
-
$105.00
X
ECO (Carrara / Onyx) - Stub 1.1
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ECO (Carrara / Onyx) - Stub 1.1

$105.00

TWSBI

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TWSBI ECO fountain pen in Persian Green with a transparent barrel, featuring a 1.1mm stub nib and piston filling mechanism.
TWSBI
ECO (Persian Green) - Stub 1.1mm
-
$59.99
X
TWSBI ECO fountain pen in Persian Green with a transparent barrel, featuring a 1.1mm stub nib and piston filling mechanism.

ECO (Persian Green) - Stub 1.1mm

$59.99

TWSBI

More Details →
TWSBI ECO (Glow Purple) - Fine fountain pen with clear barrel, featuring a piston-filling mechanism; one pen capped, the other uncapped showing the steel nib.
TWSBI
ECO (Glow Purple) - Fine
-
$59.99
X
TWSBI ECO (Glow Purple) - Fine fountain pen with clear barrel, featuring a piston-filling mechanism; one pen capped, the other uncapped showing the steel nib.
/ 1 / 2

ECO (Glow Purple) - Fine

$59.99

TWSBI

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TWSBI ECO (Glow Purple) - Stub 1.1mm fountain pen with clear barrel, featuring a piston-filling mechanism; one pen capped, the other uncapped showing the steel nib.
TWSBI
ECO (Glow Purple) - Stub 1.1mm
-
$59.99
X
TWSBI ECO (Glow Purple) - Stub 1.1mm fountain pen with clear barrel, featuring a piston-filling mechanism; one pen capped, the other uncapped showing the steel nib.
/ 1 / 2

ECO (Glow Purple) - Stub 1.1mm

$59.99

TWSBI

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TWSBI ECO (Glow Green) - Stub 1.1mm nib fountain pen, shown with clear barrel, uninked on left and filled with black ink on right, featuring a piston-fill mechanism.
TWSBI
ECO (Glow) - Stub 1.1mm
-
$59.99
X
TWSBI ECO (Glow Green) - Stub 1.1mm nib fountain pen, shown with clear barrel, uninked on left and filled with black ink on right, featuring a piston-fill mechanism.

ECO (Glow) - Stub 1.1mm

$59.99

TWSBI

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TWSBI ECO-T (Saffron) fountain pen shown capped and uncapped, featuring a piston filling mechanism, extra fine steel nib, and orange accents.
TWSBI
ECO-T (Saffron) - Extra Fine
-
$59.99
X
TWSBI ECO-T (Saffron) fountain pen shown capped and uncapped, featuring a piston filling mechanism, extra fine steel nib, and orange accents.
/ 1 / 2

ECO-T (Saffron) - Extra Fine

$59.99

TWSBI

More Details →
new TWSBI ECO fountain pen in Serpentine colourway with copper accents, displayed on a natural wooden surface
TWSBI
ECO (Serpentine / Bronze) - Extra Fine
-
$105.00
X
TWSBI ECO fountain pen in Serpentine colourway with copper accents, displayed on a natural wooden surface
/ 1 / 2 / 3 / 4 / 5

ECO (Serpentine / Bronze) - Extra Fine

$105.00

TWSBI

More Details →
new TWSBI ECO fountain pen in Matcha colourway with transparent body and green accents
TWSBI
ECO (Matcha) - Medium
-
$59.99
X
TWSBI ECO fountain pen in Matcha colourway with transparent body and green accents
/ 1 / 2 / 3 / 4

ECO (Matcha) - Medium

$59.99

TWSBI

More Details →
new TWSBI ECO (Espresso/Bronze) - Extra Fine fountain pens showing clear barrels, one uncapped to display the nib and piston-filling mechanism, with brown caps and gold trim.
TWSBI
ECO (Espresso / Bronze) - Extra Fine
-
$95.00
X
TWSBI ECO (Espresso/Bronze) - Extra Fine fountain pens showing clear barrels, one uncapped to display the nib and piston-filling mechanism, with brown caps and gold trim.
/ 1 / 2 / 3

ECO (Espresso / Bronze) - Extra Fine

$95.00

TWSBI

More Details →
ECO (Irish Green/Onyx) - Extra Fine fountain pen with a clear barrel, green trim, capped and uncapped, revealing the black steel nib and piston fill mechanism.
TWSBI
ECO (Irish Green/ Onyx) - Extra Fine
-
$95.00
X
ECO (Irish Green/Onyx) - Extra Fine fountain pen with a clear barrel, green trim, capped and uncapped, revealing the black steel nib and piston fill mechanism.
/ 1 / 2 / 3

ECO (Irish Green/ Onyx) - Extra Fine

$95.00

TWSBI

More Details →
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