The first baseball caps were worn by the New York team, the knickerbockers,around 1840,and they were made of straw Today basebaii caps are made of different fabrlcs and worn by people from all walks of life There is no age limit to the wearing of a baseball cap everyone from small children to seniors has adopted the cap the caps are comfortable to wear and adjustable for a good fit, and they are often made of fabric that makes them cool to wear on a hat day caps keep the sun out of your face and protect you from the rain, but for many people, ther ara also a fashion statement