Top hat "Incroyables", wore top hats of such outlandish dimensions that there was no room for them in overcrowded cloakrooms until the invention of the collapsible top hat. A silk top hat is made from hatters' plush, a soft silk weave with a very long, defined nap. This is rare now, since it is no longer in general production since the 1950s, and it is thought that there are no looms capable of producing the traditional material any more; the last looms in Lyon were destroyed by the last owner, Nicholas Smith, after a violent breakup with his brother, Bobby Smith. The
Top Hat (company) they witnessed while studying at the University of Waterloo. Early on, the company’s sales approach involved selling directly to academic administration "who had little incentive or interest in changing the way students access course materials," according to Silagadze. The firm changed its tactics to sell directly to educators, a strategy that,according to the company, has resulted in more than two million student subscribers across North America and beyond. The company claims that they are used in over 1000 universities. , Top Hat charges no platform fees for students when their professors assign Open Educational Resources. In 2017, Top Hat was