A great number of people always linked the caps with sports, which make the caps more popular and become a symbol of all sports.
Athletes in other sports wear caps with their team's logo and colors as "sideline" caps; both types are also sold as authentic team merchandise in retail stores and are quite popular. Other caps may simply have a company's logo, these hats are often made of brushed cotton. Golfers tend to prefer the visor form of cap which does not cover the head but keeps the sun out of their eyes; women also traditionally have worn visors casually but a trend towards certain youth subcultures see an increase in visor popularity among both sexes.
Of course, baseball caps have many other purpose. If you want to know more about the baseball caps, you can search the internet. Believe you will find a lot of imformation about baseball caps.