The prussian blue watercolour brush pen from Ecoline. These pens feature concentrated, transparent watercolour ink suitable for watercolour paper, drawing paper and card. Available in 29 colours.These brush pens can be used with or without water, they\'re not waterproof when dry so you can work on it further by wetting.Whether this involves artistic impressions, product design, illustrations, fashion design, calligraphy or children’s drawings, the brilliant colours of this liquid water colour paint bring every piece of art to life.Brand - Royal Talens Sub Brand - Ecoline Colour - Prussian Blue Nib - Brush Tip