The title Borsalino comes from the name of the hat company that made the men's hats that appear in the film. The Borsalino Company made fedora style hats from the late 19th century to the 20th century: the golden age was in the 1920s, 1930s and 1940s, when sales went through the roof. (Although the company still sells fedora hats today, the company is most involved with the manufacturing of clothes and helmets for men.)