The cloth-covered button on the crown is about the size of a bean seed and may be the origin of the term “beanie”. Some academics believe that the term is instead derived from a type of headgear worn in some medieval universities.
According to the Oxford English Dictionary, the etymology is uncertain, but probably derives from the slang term “bean”, meaning “head”. In New Zealand and Australia, the term “beanie” is normally applied to a knit cap known as a toque in Canada and parts of the US, but also may apply to the kind of skull cap historically worn by surf lifesavers and still worn during surf sports. The non-knitted variety is normally called a “cap” in other countries
The beanie hat, a smaller close fitting hat, that originated in the United States in the early 1900’s. The word “bean”, back in the early 1900’s, was slang for head. In the early 1900’s the hats were worn by mostly college students. In the 1950’s they were worn by college freshmen as a form of hazing. The beanie hat also became very popular with blue collar workers who wore them to keep their head warm. They also wore then but to keep their hair out of the way. The beanie has no brim to obstruct the tradesman’s work. https://en.wikipedia.org/wiki/Beanie_(seamed_cap)
At the time, beanies was not traditionally know to be a fashionable accessory, they were worn more so for necessity. But, with the fashion trends of the 1990’s, the beanie seem to gain more and more popularity.
Browse for more hats here: https://www.hatsbylori.co.za/product-category/winter-beret-hat/