One size fits most, adjustable with a size button, Best fit for 55-58cm 21.6u0026#34;-22.8u0026#34; 6 7/8 - 7 1/4

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Colorful - different from other sun bucket or boonie hats, giving ladies more color choices

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Sun protection - Wide brim keeping sun off your ears, nose, face and neck, UPF 50+

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Adjustable neck strap - straps for windy days: working in the garden or taking a ride in a boat or to the beach

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Packable - can be folded to pack and doesnu0026#39;t lose itu0026#39;s shape, easy to wash and store

nPeople who get a lot of exposure to ultraviolet (UV) rays are at greater risk for skin cancer.So get this one, it's suitable for outdoor exercise and travel