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The Twsbi Eco Cosmo Blue & Onyx pairs cosmic blue resin with onyx-black trims and a clear piston-filling body. A bright, modern fountain pen designed for smooth everyday writing.
| Brand | TWSBI |
| Series | Eco |
| Color | Blue |
| Edition | Regular |
| Body Material | Resin |
| Nib Material | Steel |
| Nib Type | Hard |
| Filling Mechanism | Piston Filler |
| Cap Type | Screw-Cap |
| Trim | Ruthenium |
| Length (closed) | 139 mm |
| Length (body) | 132 mm |
| Length (cap) | 60 mm |
| Diameter (body) | 13 mm |
| Weight (overall) | 21 g |
The Twsbi Eco Cosmo Blue & Onyx fountain pen expands the iconic Eco collection, renowned for its balance of quality, functionality and contemporary design. This special edition stands out with a cosmic blue cap, enriched by swirling tones reminiscent of glowing galaxies and shifting light.
The translucent turquoise end cap adds a fresh and vibrant contrast, while the onyx-black ruthenium trims – clip, rings and nib – bring a refined and modern look. The clear barrel allows you to easily monitor ink level and color, enhancing both practicality and visual appeal.
Equipped with a steel nib and a reliable piston filling system, the Twsbi Eco delivers smooth, consistent writing with a generous ink capacity perfect for everyday use.
As with all Twsbi fountain pens, the Eco Cosmo Blue & Onyx is fully disassemblable for long-term maintenance. The package includes a wrench and silicone grease, provided for pen care and not intended for immediate use.
A vibrant, modern interpretation of the Eco series, inspired by color, light and the beauty of the cosmos.
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