OPUS 88 Harmony Fountain Pen - Mocha MousseA soft caf toned demonstrator with warmth The Opus 88 Harmony Mocha Mousse is a full sized eyedropper fountain pen finished in a muted coffee inspired resin with soft purple translucency and layered depth. It blends warm neutral tones with Opus 88s high capacity writing system, creating a pen that feels calm and effortlessly usable. What sets it apart High capacity eyedropper filling system for extended writing Shut off valve prevents leaks Soft mocha