These beautiful felt-tip pens not only color very nicely, they are also magical! The set contains 10 felt-tip pens in all kinds of colors, of which 1 pen has a very special color, namely white. If you color with this white marker, you will not see anything. But if you first color with another marker and then go over it with the white marker, it changes color. For example, black changes to purple, green to orange and red to yellow. The markers also have 2 points; a normal felt-tip pen point and a brush point, making the pens also very suitable for hand lettering. The effect itself is a lot of fun to play with, but you can also use it to add smaller details to a larger colored box. This will make your drawings more beautiful than ever before!