A pen that bends the rules—literally. The ZIG Letter Pen COCOIRO is a fresh take on writing tools, known for its unique flexible tip that delivers a springy, smooth writing experience unlike any other. Redesigned for even better control and fluidity, the upgraded nib writes effortlessly with a refined softness. Now available in 8 stylish body colors, the COCOIRO combines aesthetics with performance, making it ideal for journaling, sketching, or everyday writing with character. Specifications Ink Color Black Ink Type Water-based dye ink Tip Extra fine Refillable Yes (Black refill installed) Body Colors 8 total Body Size 13mm (Ø) × 126mm (L) Weight 11g Package Size W45mm × H172mm × D18mm *Each pen comes with a pre-installed black ink refill.