Sumi brushes are different from watercolor, oil, and most other brushes because they are made up of two separate parts.
The central core, which determines the height and basic function of the brush, is made of relatively stiff hairs gathered to form a tapered tip, while the outer sheath consists of softer hairs selected for their superior water-holding capacity and to facilitate smooth strokes.
They feature a combination of horse, badger, deer, and sheep hair of the same length that come to a point when dipped in water.
The hair structure ensures smooth maneuverability and dynamic movements, whether light or strong pressure is applied.
