Berol Colourfine Pens are a classroom favourite that help children confidently express their creative side for endless colouring and writing fun.Filled with vivid washable ink.Washable ink can be washed off most clothing and removed from most porous surfaces.Transparent ink which allows additional colours to be created with overlays of the brighter colours. Smooth steady ink flow for consistent easy-to-see lines.2 Week Cap Off Life - all colours except for blue and black can be left uncapped for at least 14 days before they dry out.Fine tip provides excellent detail for colouring drawing and writing.0.6mm line width.