Opera hat

Rarity: Common

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At a glance

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Notion

Domain

Science and technology

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What Wikipedia says

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 indoor venues, such as the theatre and opera house.

Excerpt from the Wikipedia article “Opera hat”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Peng, edited, masked and converted to PNG by Wikipeder 2007-07-21, CC BY-SA 3.0, via Wikimedia Commons.