The new "multi-ink" developed by Staedtler to revolutionize the color pens. Unsurpassed lightfastness and quick drying and water resistance that traditional color pens cant match, so you can enjoy it for a long time. Can be used for a wide range of applications, such as illustrations, designs and crafts. Multi-ink is also a special water-based ink that conforms to AP marks, safe for the body. Odorless and no unpleasant smell, you can rest assured that it can be used indoors for long periods of time. Available in 36 colors