An umbrella or parasol is a folding canopy supported by wooden or metal ribs and mounted on a pole made of wood, metal, or plastic. It is primarily designed to protect individuals from rain. Traditionally, the term "umbrella" refers to devices used for rain protection, while "parasol" denotes those used for sun protection. However, these terms are often used interchangeably. The distinction between them can sometimes be based on the material of the canopy; some parasols are not waterproof, whereas some umbrellas may be transparent. Umbrella canopies are typically constructed from fabric or flexible plastic. There are also hybrid designs known as en-tout-cas (French for "in any case").
In general, parasols and umbrellas are small, handheld items intended for personal use. Golf umbrellas represent the largest category of portable umbrellas. Umbrellas can be classified into two main types: collapsible and non-collapsible. Collapsible umbrellas feature retractable poles that allow them to fold into compact sizes, while non-collapsible umbrellas only have foldable canopies. Additionally, umbrellas can be either manually operated or spring-loaded automatic models that open with a button press.
Handheld umbrellas come with various handle designs, including wooden handles, plastic cylinders, or curved "crook" handles similar to walking sticks. Umbrellas are available across a wide range of prices and quality levels, from inexpensive models sold at discount stores to high-end designer versions. Larger parasols designed to provide shade for multiple people are often used as fixed or semi-fixed installations, such as with patio tables or outdoor furniture, or as shading solutions on sunny beaches.