Specification :

A flyer (or flier) is a single page leaflet advertising a nightclub, event, service, or other activity. Flyers are typically used by individuals or small business and are a form of small scale, community communication.
Flyers are handed out on the street, posted on bulletin boards, or given away at events. Bulletin boards are found on college campuses, in cafes, community meeting houses, laundromats and small markets.
Flyers, along with postcards, leaflets and small posters, are vital and free forms of communication for people who want to engage the public but do not have the money or desire to take out classified advertising in a local newspaper. Their widespread use intensified with the spread of desktop publishing systems. In recent years, the production of flyers through traditional printing services has been supplanted by Internet services; customers may send designs and receive final products by mail. Flyers range in tone from humorous to irreverent or absurd.