Akashiya 5 Brush Pen Markers Summer Set Markers made with water-based pigment ink that faithfully reproduces the elegant and traditional colours of Japan. They combine the traditional quality of the sumi-e brush with the functionality of the modern marker. They are the first independently water-soluble markers.  The colours can be mixed with water to create lighter shades, and combined with other markers to create new colours.  Thanks to the water-based ink, you can wet the pen or use it on damp paper to create shading effects or soft watercolours. It is also suitable for use on pencils, inks or water resistant markers to apply different techniques.