The Santa Fe Outdoor Hat is constructed of crushable wool felt and features a pinch front crown, interior dri-lex sweatband and studded leather hat band. Wool Felt Made in U.S.A. Brim: 3 1/4" Crown: 4" Water and Weather Resistant HOW TO DETERMINE YOUR HAT SIZE Start with a measuring tape (or a piece of string you can measure later), and wrap it around your head, placing it where your hat will sit—typically, at the middle of your forehead and about 1/8″ above your ear. Hold the tape firmly, but not uncomfortably tight. If your measurement falls between sizes, order a size up.