Opera hat characteristic snapping sound heard upon opening a gibus suggested a third name, the "chapeau claque", "claque" being the French word for "slap". 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
Top hat Eton College has long abandoned the top hat as part of its uniform, top hats are still worn by "Monitors" at Harrow School with their Sunday dress uniform. They are worn by male members of the British Royal Family on State occasions as an alternative to military uniform, for instance, in the Carriage Procession at the Diamond Jubilee in 2012. Top hats may also be worn at some horse racing meetings, notably The Derby and Royal Ascot. Top hats are worn at the Tynwald Day ceremony and a few other formal occasions in the Isle of Man. The modern standard