Billie is a mid brim fedora constructed of 100% wool felt and genuine leather trim. The sewn brim paired with the soft felt gives the perfect amount of structure, which places it right in the middle between a floppy brim and stiff brim designation. Goldilocks, if you will? Brim Width: 3" Crown Height: 4.75" Size: O/S (57cm) with a velcro size adjuster tucked inside the inner sweatband for a customizable fit.