These highly concentrated watercolour pens from Ecoline feature flexible brush nibs to create intense colours or soft blended watercolour effects. Ideal for a variety of surfaces including watercolour paper, cartridge paper and vellum. This set features a selection of 5 yellow hues. 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. - Set of 5 - Water-Mixable - Flexible Brush Nib - Yellows Set