Copic markers are built to last and have been refillable since their launch in 1987. Copic Ink features a new design for an improved refilling experience, with a long nozzle for quick and precise refills, also ideal for alcohol ink art. The translucent bottle makes it easy to measure and control the amount used. The expertly formulated inks are high-quality dye-based, odorless, water-free, and quick-drying. They can be used for airbrush work and for sketching and classic pen and brush drawings.