Aquadoodle Classic ColourClassic Colour from Aquadoodle brings four contrasting corners together on the one mat for hours of magical drawing fun and creativity but with no mess to spoil the party! Simply fill the Aquadoodle pen with ordinary tap water, run the nib over the magic mat and see the colours appear! Any water that does run off the mat, runs clear. No mess, no stains, nothing to worry about. As the drawing dries, designs fade away, ready for the mat to be used