A leaflet is a sheet of paper folded in two, resulting in a piece with four sides: front, inner and back sides. This type of brochure bears information on a particular company, including an introduction, list of products and services, and contact information. Many times leaflets work as small catalogues or folders. This type of brochures are usually letter size (each side measuring 5.5 x 8.5) or double letter ( each side measuring, in this case, 8.5).

Given the increased costs (of paper, colours, printing quality) leaflet print runs are usually smaller if compared with that of flyers, which are mass. They are distributed in commercial samples, conferences, display stands and through mail, to a particular public: actual and potential clients clearly defined. Leaflets are meant to be eye catching and therefore their designs are usually done with striking corporate colours, images and typographies.