Our magic markers 9 + 1 colours, have a specially designed tip which cannot slip inside the pen or bend under pressure.  Featuring water-based inks free from formaldehyde and other harmful substances, the markers are bright in colour and can be used on many surfaces including paper, cardboard, wood etc.  The original colour of the magic marker can be changed by the colour-changing marker and the colour-changing marker can also be used as a secret ink, which only becomes visible after being drawn over with the magic markers.  Providing children with lots of fun and creativity while drawing.