These deluxe watercolor brushes feature a specially designed combination of pure natural squirrel hair and a black synthetic hair blend. This combination holds huge amounts of color and releases it with perfect control. The soft hair blend allows for delicate techniques like glazing and painting multiple layers, yet is firm enough due to the synthetic blend where lifting color is easy with a light and gentle scrub of the brush. Black Velvet Brushes are perfect for artists that work with inks, gouaches, acrylics, watercolors, and dyes. A treat for any multi-media artist!