Uncategorized · Fountain
TWSBI Eco Fountain Pen - Cosmo - Onyx Trim
TWSBI · sold by Pen Boutique Ltd · $58.99 · in stock

Watch Instagram Story I A Radiant Twist on a Beloved Everyday Writer The TWSBI Eco Cosmo elevates the classic Eco silhouette with a playful, luminous charm. Its crystal-clear resin barrel beautifully showcases your ink as it moves, while the Cosmo blue cap and finial softly glow to create a subtle cosmic effect in low light. Paired with a sleek onyx trim and a smooth-performing steel nib, this pen blends durability, style, and everyday practicality in one thoughtful design. The piston-filling mechanism offers impressive ink capacity, and the inner-cap seal keeps the nib ready whenever…
| Option | Price | Stock | |
|---|---|---|---|
| Extra Fine | $58.99 | out of stock | |
| Fine | $58.99 | out of stock | |
| Medium | $58.99 | out of stock | |
| Broad | $58.99 | in stock | Buy at Pen Boutique Ltd → |
| Stub | $58.99 | in stock | Buy at Pen Boutique Ltd → |
Prices and stock from www.penboutique.com’s public catalog, last checked 2026-11-01 04:47 UTC; the store’s checkout shows the final price. Agents: JSON at https://api.kaupia.com/v1/product?id=kp:ed594cf5-551f-48b8-a952-6eec74bf7861; buy with POST /v1/checkout or MCP create_checkout.