Bowler hat is a hard felt hat with a narrow brim and a rounded crown It was also known as bob hat. billy coke. billycock. bombin and derby, It was first made in 1849 for Edward Coke, British soldier hard hat to be close fitting to protect heads, in Victorian times working class loved it only later to become popular with middle and upper class in United Kingdom especially civil servants clerks and bankers, officers of the Queen's guards wear them as a part of work dress In United States, it was the most popular Hats.