Casualbox Charm Womens Summer Sun Hat Light Weight Wide Japanese Design 100% Cotton main body, 100% Polyester mesh Lining The extra large 3.3 inch front brim is specially made to block UVA and UVB rays by 99% The inside of the hat is lined with a mesh that increase ventilation and breathability, reducing stuffiness and making the hat much more comfortable to wear for long periods Sweat absorbent fabric is lined across the hat where it touches the forehead, preventing sweat from running into your eyes and face The entire hat weighs less than 50 grams, exactly the kind of head gear you want to be wearing when the heat is baring down on you Best fits head sizes of approximately 22 to 23.5 inches