Hip flasks, also known as pocket flasks or whiskey flasks, have a history dating back to at least the 18th century. The exact origins are not precisely documented, but they became popular during the 18th and 19th centuries, particularly in Europe and America.
These flasks were typically made of metal, such as pewter or silver, and were designed to be small and portable, allowing individuals to discreetly carry small amounts of alcohol with them. While the precise date of their invention is unclear, they became an iconic accessory associated with certain social customs and occasions, particularly during the Victorian era and Prohibition in the United States.