What is fun sized?

Fun-sized is a term used to describe small candy bars or chocolates that are typically sold in multi-packs or as mini versions of regular-sized candy. These treats are often given out during Halloween or other events, as they are a small and convenient serving size. The term "fun-sized" was coined by Mars Inc. in the late 1960s and has since become a commonly used marketing term for small candy. Fun-sized candies are usually about half the size of regular candy bars and come in popular varieties such as Snickers, M&M's, and KitKat.