The term 'Western Topper' refers to a type of hat that is popular in the western United States. The two crossword solutions, STETSON (7 letters) and Ten Gallon Hat (12 letters), are both types of Western Topper. The STETSON is a felt hat with a wide brim and a high crown, while the Ten Gallon Hat is a large, wide-brimmed hat made of straw or felt. Both hats are associated with the traditional style of the American West.