The properties of the finest Kolinsky sable, in an animal-friendly alternative filament. Each KINGART Finesse Watercolor brush head is meticulously hand-shaped from a proprietary blend of fine synthetic hair in minimum of three thicknesses to most closely mimic natural hair. This fine mix enables them to hold an abundance of water, while retaining their spring and response to the hand of the artist. Durable and more affordable than comparable quality natural hair brushes, they are exceptional for watercolor, inks, dyes, and other light media but also work well with oil, gouache and acrylic.