I bought these pens to do art therapy ... and I am very happy ... Super metal box! just a small problem concerning a lack of some color as 1 or 2 roses, 1 purple lavender, baby blue one, but considering the price they downright worth it !!! I will redeem these colors to the unit and will complete my panel ... I forget they can be used as a watercolor. In summary there are fine for coloring normally and to do watercolors.