Opera hat Opera hat An opera hat, also called a chapeau claque or gibus, is a top hat variant that is collapsible through a spring system, originally intended for less spacious venues, such as theatre and opera visits. Typically made of satin in black colour, its advantage is that it folds vertically through a push or a snap on the top of the hat, in order to be conveniently stored in a wardrobe or under the seat. Invertably, it opens in the same one moment fashion by an easy push from underneath. Its French name "chapeau claque" is a composition of "chapeau",
Top hat popularity of the silk plush top hat possibly led to a decline in beaver hats, sharply reducing the size of the beaver trapping industry in North America, though it is also postulated that the beaver numbers were also reducing at the same time. Whether it directly affected or was coincidental to the decline of the beaver trade is debatable. James Laver once observed that an assemblage of "toppers" resembled factory chimneys and thus added to the mood of the industrial era. In England, post-Brummel dandies went in for flared crowns and swooping brims. Their counterparts in France, known as the