These wax-based crayons from PRiMO are great for fostering creativity in young artists! They leave a vivid and shiny mark on paper or cardboard, even better on rough paper. They are also eco-friendly because they don't produce any waste and they are long lasting. The ease of use makes them perfect for young children and suitable for artists of all ages. Colors can be applied in multiple layers and they do not make your hands dirty. PRIMO is here to inspire a child's artistic expression at an affordable price point.