Diapers are primarily worn by children who are not yet potty trained or suffer from bedwetting. However, they can also be attached by adults who suffer from incontinence or in undisturbed circumstances where access to a toilet is unavailable. These can include the elderly, those with a objective or mental disability, and people working in extreme conditions such as astronauts. Diapers are Adult Diaper above all worn out of necessity rather than choice, although there are exceptions; people such as infantilists and diaper fetishists wear diapers recreationally for comfort, emotional fulfillment, or sexual gratification.
During the 1950s, companies such as Kendall, Parke-Davis, Playtex, and Molnlycke entered the disposable diaper market. In 1956, Procter & Gamble began researching disposable diapers. Vic Mills, along with his project group including William Dehaas, both men who worked for the company, invented "Pampers" while searching for a better product to use.