TWSBI ECO Fountain Pen - Serpentine Bronze Glass Pen Fuji's slopes in the summer

Fuji's slopes in the summer

ages gracefully

with a solid weight provided by the metal tubing that further enhances one’s writing experience

suitable for ink-sketching

While several places in Japan claim to be the birthplace of cider

TWSBI ECO Fountain Pen - Serpentine Bronze Glass Pen Fuji's slopes in the summerTWSBI ECO Fountain Pen Serpentine Bronze Introduced in June 2025, Serpentine Bronze is the second iteration of the ECO fountain pen collection made with mixed color acrylic, following the first version: Amazonite, released in December 2024. The making of Serpentine Bronze involves mixing dark green with white yellow gold acrylic for the cap and piston knob and pairing with a bronze nib and trim. The colors of the acrylic are mixed during the injection