Annie Sloan’s Flat Brushes feature advanced synthetic fibres, in a vibrant blue, which help to produce a smooth, contemporary finish. The brushes are designed to take a large amount of paint and to apply the paint evenly, minimising brush marks.Sizes. Small (23cm xLarge (26cm x 6cm on another listing Look after your brushes and wash through with hot soapy water, wash satin paint out of brushes immediately after use.