Ink TheCoffeeMonsterzCo x Robert Oster Signature | Day To Night

When dusk slowly swallows the last rays of sun, and the sky takes on a deep plum purple hue—that very moment has been captured in a bottle. Day To Night is an ink created in collaboration between TheCoffeeMonsterzCo and the legendary Australian brand Robert Oster Signature, valued by collectors and fountain pen enthusiasts worldwide.

Its rich, warm purple-plum shade gives character to every letter—whether you're writing a journal, letters, or jotting down thoughts in your favorite notebook. It's a color that changes depending on the angle of light and the type of paper, offering subtle depth with each use.

Specification

• Capacity: 50 ml
• Packaging: plastic bottle
• Waterproof: no
• Compatibility: all brands of fountain pens