Chaos Headwall Cadet has Polyester shell material that is coated with DWR treatment to make material highly water repellant. This hat is insulated with 70 grams of Thinsulate to keep you warm in all conditions. Hat is also lined with pile fleece for added comfort and warmth. Drop down earflaps keep your ears warm and can be folded up when not needed. Foldable bill/visor allows you to fold up hat and place in pockets or bags and not ruin the shape of the bill.