Baseball cap

A soft cap with a rounded crown and stiff, forward-projecting brim, originally worn by baseball players and now common casual headwear.

Crown (headwear): The part of a hat that covers the top of the head. The rounded crown gives the baseball cap its characteristic silhouette.
Brooklyn Excelsiors: A nineteenth-century Brooklyn baseball club known for its distinctive uniforms and cap. The club's 1860s cap is often cited as an early model for the modern baseball cap.
Major League Baseball: The highest professional baseball league in the United States and Canada. Its teams make baseball caps visible symbols of clubs and cities.
Flat cap: A close-fitting cap with a small, stiff brim and a rounded, low-profile crown. Its compact crown and short brim contrast with the baseball cap's taller crown and broad visor.
Brim (headwear): A projecting edge of a hat that extends outward from the crown. The stiff forward brim shades the eyes and distinguishes this cap from brimless styles.
Baseball uniform: The standardized clothing worn by players on a baseball team. The cap began as part of baseball's evolving team uniform.
Sports merchandising: The sale of licensed products associated with sports teams, leagues, and athletes. Team caps became widely sold memorabilia and licensed apparel.
Trucker hat: A cap with a foam front, mesh rear panels, and an adjustable closure. It shares the baseball-cap silhouette but uses a distinctive ventilated back.
Snapback: A cap closure with an adjustable plastic strip secured by interlocking snaps. It is one common way baseball caps accommodate different head sizes.
Knickerbocker Base Ball Club: A New York baseball club founded in 1845 that helped codify early rules of the game. Its players wore early caps, part of the headwear tradition that preceded the modern design.

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