 It is usually dome-shaped or cone-shaped, but various other styles also exist, including versions with dome-shaped, cone-shaped, or flat crowns with a flat or gently sloping brim.The tip of the crown commonly has a spiked or knobbed finial made of metal or wood (sometimes with horsehair or feather plumes).The rim may also feature tassels of beads, feathers, or metal ornaments.