Ecoline pen is very easy to use and uses, perfectly adheres to cardboard, watercolor paper. Concentrate of watercolor (watercolor) in liquid form in handy pen with brush tip. Available in 29 colours plus blender.
Renesans oil pastels are made of oil. They are soft and easy to use, individual colors are easy to blend and combine. Thanks to the intense colors, they give painterly effects and stick well to the substrate.