Windsor & Newton Professional Water Color 0.2 fl oz (5 ml) Tubes are a special set of 12 colors to choose from.
We focus on the "single pigment method" that produces 1 color of each color with 1 pigment type, so it has clear color and is resistant to staining.

Finest watercolors used by British royal family
The highest grade watercolor paints with purity, quality, and reliability.
The highest quality pigments are used to produce extremely bright colors, vibrant and durable.
Unique pigment dispersion during production for extremely high transparency.
Most of the 109 colors are ranked as a "professional robust color".