Copic Sketch offers a professional grade marker for designers and illustrators. Each marker has two versatile tips to produce a range of strokes and fills. While the broad nib offers smooth, consistent coverage for large areas, the fine nib allows for easy detail work.  Copic markers are uniquely made with a "roll-proof" flat barrel and filled with alcohol based ink to ensure a long life. Copic Sketch Markers are ideal for cartoon illustrations, fashion designs, calligraphy, airbrushing, and graphic arts. The markers are fast-drying, permanent, non-toxic, and toner compatible.