RFID Blocking Passport Holder Premium Multi-function Travel Pouch Material:100% wool(wool felt).Style:Bucket hat with a cute bowknot. Head circumference:approx 56-58cm(22.04"-22.83") The material (wool felt) has a good cold-proof and wind-proof function. The ladies' bucket hat has a beautiful color and with a cute bowknot,noble and fashionable. You can use it in winter to keep warm,and you can also use it in spring or autumu as a fashion accessory.