The North Face Him Fleece Cap This is a flight cap (trapper hat) with excellent wind resistance and heat retention. Size: Head circumference 56.5cm - 59.5cm Material: The outer fabric uses GORE-TEX INFINIUM™, which has excellent wind resistance, and the insulation is PrimaLoft®, which is resistant to getting wet. Design: Long-pile fleece is used for the ear flaps, effectively trapping dead air (still air) to achieve high heat retention. Functionality: The ear flaps can be secured with snap buttons, allowing you to use them differently depending on the scene and temperature. This model is very popular due to its functionality and design. Thank you for your consideration.