Crayola Colour Wonder: the line specially developed for preschool children Colouring set: includes 18 themed colouring pages with all your favourite Paw Patrol friends and 4 non-staining Color Wonder felt-tip pens No stains: Color Wonder inks are magical and transparent because they only take on the special paper and nowhere else Safe fun: the felt tip pens do not pollute the skin, clothing or furniture. For relaxed colouring without fear of stains