The sun always shines, even when you don't see it. It's there behind the clouds! So pack a hat, 'cause you never know when you'll want a little instant shade. It packs into itself and bursts forth when needed-just like the sun through those clouds. And the wind? Let it blow, that's what the chin straps are for anyways. Packs into its own circular pouch for easy carrying and storage? Adjustable headband and chin straps? Fits heads sizes up to 23 ½"? Brim diameter measures 19 ¾"? 100% organic cotton? Machine washable