Brim: 3" Crown: 4.75" Size: O/S with a size adjuster for customizable sizing capability. The velcro ribbon size adjuster is tucked into the sweatband on the inside of the hat. Sedona is an airy and lightweight packable panama style that is perfect for on the go or vacation. She features a suede band and an open weave for ventilation. Did we mention she's packable?