TWSBI Eco Fountain Pen - Rootbeer with Bronze Trim and Nib
Like an amber apothecary bottle
The TWSBI Eco Rootbeer with Bronze is a transparent piston filling fountain pen, in a rich amber-brown, with cola like undertones. Built on TWSBI’s reliable piston system, it provides high ink capacity and full ink visibility, with a message of comfort and hope.
What sets it apart
- Rootbeer theme brings a fun and warm nostalgia
- Transparent amber finish invites ink play
- Builds on the earlier TWSBI "drinks" releases
- Smooth steel nib, with reliable flow
- Piston filling system for large ink capacity
Feel in the hand
The Rootbeer Eco feels familiar and inviting. The amber tone softens the demonstrator look, making it feel less clinical, and more personal. It brings a sense of health to your thinking.
Who it’s for
- Eco collectors, especially if you enjoy the "drinks" series
- Writers who like the appeal of the amber-glass theme
- Users ready to step up from entry level pens
- Ink explorers feeling the pull to play with colour
- If you're looking for something grounded, rather than bright
Not for
- Users who prefer cartridge or converter systems
- Those who want a heavier or metal bodied pen
- Writers looking for small or pocket sized pens
- Anyone who prefers fully opaque designs, that hide the ink
Practical tips
- Team it up with brown or red ink, and use a creme paper to continue the vintage appeal
FAQs
Is Rootbeer a limited edition? Yes, it is a limited production, which means once it sells out we usually can't get any more stock.
How is it different to the standard Eco? The upgrade to the nib and trim with bronze coloured plating and the unique colour way.
How is it different to Eco Espresso? They are both brown demonstrators, but set opposite moods. Espresso is an opaque dark, like a daily driver or reliable work pen. Rootbeer is playful and feels refreshing. If Espresso writes your work, Rootbeer makes you want to write.
How does it fill? Submerge the nib in the fountain pen ink and turn the piston to draw up the ink. Cartridges free.
Can I use shimmer or document inks? Yes, as this pen has good flow, but clean the pen more often.
Can I disassemble it? Yes, all parts detachable for cleaning. Take care not to over tighten parts when reassembling or replacing the cap.
Can I replace the nib? Yes, replacement nibs (friction fit) are available.
Is it beginner friendly? Yes, it is a step up from cartridge/converter pens, but very popular with beginners. Instructions are included in the box.
Is it travel friendly? Yes, the large ink capacity is the appeal for travel. To travel by air, carry the pen completely full or empty, and store it with the tip up.
What’s included
- TWSBI Eco Rootbeer fountain pen
- WrenchÂ
- Silicon grease
- Simple gift box
- Instruction leaflet
- Free nib tuning from LarryPOST
- Preorders also receive bonus Cola scented 5mL ink
Ink pairing suggestions
- De Atramentis Cola Fragrance for a refreshing fill
- Platinum Sepia (pigmented)Â for a fadeproof option
- New Pelikan Pyrite antique gold shimmer ink
Build your practice
- Collect the "drinks" range -Â Caffe, Creme, Espresso
- Replacement Bronze Eco nibs, for exploring line widthÂ
- Midori MD notebooks with smooth, creme paper
Specifications
- Brand: TWSBI
- Brand series: Eco
- Launch: April 2026
- Origin: Taiwan
- Nib: Stainless steel
- Nib sizes: EF, F, M, B, 1.1mm stub
- Filling system: Piston filler (1.8mL)
- Body: Transparent polycarbonate
- Trim: Bronze coloured steel
- Cap: Twist
- Diametre: approx. 13mm
- Length: approx. 139mm (capped)
- Weight: approx. 21g (capped)
- Comparable size: Lamy Safari, Pilot Metropolitan
This glass-like aesthetic could become your most enjoyable Eco.
