Made popular by baseball, the six-panel cap is an essential part of a player’s uniform. In addition to its protective function, it also serves to identify the team. The front of the cap usually features a design, often in the form of a monogram or symbol. Since the first televised broadcasts of games in the 1960s, fans have been encouraged to wear their own caps to show their support. Subsequently, many companies followed suit, and the cap gained popularity as a promotional item.