With their outstanding performance and creative versatility, Copic Markers are the first markers created entirely with design in mind. The ink formula and colors have remained consistent since they were first designed 25 years ago. Markers are low-odor, roll-resistant, and feature durable polyester nibs that are interchangeable and available in 9 different weights and styles. Copic markers come in hundreds of colors and are refillable with a variety of inks. Electronic production guarantees consistency of both color and ink flow, and the precise colored capping system provides for instant color selection.