Leaflets were originally invented once as a propaganda political material. But now flyers have become a profitable advertising tool to achieve commercial goals.

The effectiveness of a leaflet depends largely on the quality of execution, content and printing of the flyer.
The costs are not large, and the audience reached can be huge.

Usually flyers are part of an advertising campaign, on a par with or as an addition to other materials to promote a brand or product.

Their size is small, common A5:
148mm x 210 mm, no fold (fold)

Often the material is printed on both sides of the flyer, but sometimes only on one, for leaflets intended to lie on the table.

A leaflet with several folds is an advertising booklet.