Top hat top hat is a hard, black silk hat, with fur now often used. The acceptable colors of hats are much as they have traditionally been, with "white" hats (which are actually grey), a daytime racing color, worn at the less formal occasions demanding a top hat, such as Royal Ascot, or with a morning suit. In the U.S. top hats are worn widely in coaching, a driven horse discipline as well as for formal riding to hounds. The collapsible silk opera hat, or "crush hat", is still worn on occasions, and black in color if worn with evening wear as
Top Hat (company) Top Hat (company) Top Hat is a Canadian educational software company with its headquarters in Toronto, Ontario, Canada, and a second office in Sydney, Australia. Top Hat hosts a library of interactive college textbooks that students read on their mobile devices, and a platform designed for teachers to check attendance with additional products for student engagement, assignments and activities. Students pay to use the app per semester or over longer periods, and universitywide licences are also available. Co-founders Mike Silagadze and Mohsen Shahini started Top Hat in 2009 in Waterloo, Ontario, to tackle problems with student concentration and mobile devices