Van Gogh Watercolour Pencils are watercolor pencils from Van Gogh, a brand of Royal Talens in the Netherlands. Lines drawn with them dissolve in water, so they can give a look like watercolor painting. The colors are lightfast and resist fading.
The range has 60 colors, and each color is sold on its own. Sets come in 36 and 60 colors.
You can color with them like regular colored pencils. Then go over the area with a wet brush to dissolve the color. This lets you make soft gradations and blend colors together.