This brush has synthetic bristles in a triangular shape.The ferrule is flat like a normal flat brush, but on one side the hairs are much longer than on the other side.It allows a large amount of paint to be loaded and more random marks to be made.The triangular shape and fine tip are also very useful for painting very fine lines.You can use the whole body of the brush and make even strokes, or use less pressure to make finer lines.Suitable for textures.