Made of 100 % Straw. Ribbons and rolls wide hat with bowtie back. Extra durable Same material inside. VERSATILE: One size fits most with an adjustable backwall closure with bowtie. Adjustable Circumference 21.7"-23.5", fits most sizes. Open top allows room for tied-up hair. SEXRA FEATURE: Very wide brim prevents from front and all sides, no more squinting, glare, crow's-feet, and sunburn. Fetures a roll-up function. Very convenient for taking it on the go while traveling. MAKES GREAT GIIFT: Perfect for sun protection, summer vacation, or daily wear. Excellent travel hat, takes very little space when folded.