It is important to note that in the world of fashion, styles are crossed and new things are tried all the time. There are very minor differences between certain styles and terms like trilby and fedora that are nowadays pretty interchangeable where they used to be distinctive brim sizes. Not everyone has the same opinion on a style, even our manufacturers mix certain style names like the ones just mentioned.
Looking for a new hat but can't decide if you look better in a large brim or a small brim? Medium size brims range from 2 1/8 inches to 2 3/8 inch brims.