A BOWLER, for instance, is a type of HAT that is typically made of felt and has a round brim. It is also known as a derby HAT or a billycock HAT. The term 'BOWLER' comes from the fact that it was originally designed in 1849 by the London HAT-makers Thomas and William BOWLER. The HAT was popularized by the British Prime Minister Benjamin Disraeli, who wore one to the House of Commons. It is still worn today as a fashion accessory.