United States Marine Corps Dress Blues Cover (hat).

A formal uniform hat worn by US Marines also known as the white barracks cover. Worn with the dress blues uniform.

Enlisted covers have the plain white vinyl or cloth crown, plain black bill, and black chinstrap. A large gold eagle globe and anchor (EGA) is worn on the top center of the crown. Gold screwpost hold the chinstrap in place.

Officer covers have additional features such has red/gold chinstraps, gold and silver EGA, gold leaves on the bill, (depending on grade), and a white quadrafoil on the top of the crown. Originally the quadrafoil was worn to prevent sharp shooters on the masts of ships from shooting their own officers.