Da Vinci Casaneo Watercolor brushes are made from synthetic Kazan squirrel hair and are vegan and animal-friendly. Designed for use with watercolor or fluid acrylics, the Casaneo line possesses both the springy elasticity of Kazan squirel hair and its high paint-holding capacity. The Range is available in series:- Series 1290, Series 1298, Series 1593, Series 490, Series 5598, Series 988, in Sizes:- No 0, No 1, No 2, No 4, No 8