The ICO Brush Pen Colour - Dark Green fibre Brush pen with water based ink from Germany and ventilation caps. Flexible Japanese brush-style-tip, allowing you to work in varying line widths ranging from 1mm to 3mm; enables soft strokes just as with a paintbrush. Ideal for drawing, sketching, adult colouring, lettering, illustrations and calligraphy. The Pigmented Ink bleeds through thinner paper just as with Alcohol-based Markers.