Flat, single-sided, adhesive substrate made of paper or plastic. Its form can be rectangular, round or free. Stickers can be graphically designed, printed and given effects through further processing.
Stickers serve the purpose of information, advertisement, propaganda, adoration or adornment. They can be mounted to fixed or mobile media such as bags, cars, windows, or street lamps.
The fact that stickers can be removed more or less easily, can be part of the preliminary considerations of the sender.