Hats & Caps by Tilley. Details:Meet the big hat with the slim brim. It has everything an Airflo should – our signature mesh ventilation, water-repelling and sun-blocking technology, the buoyancy of a bobber on water – plus, a modest profile that slims out the look while sacrificing none of its stature. Learn more. Use mild detergent. Do not use softeners or bleach. Remove windcord and foam from crown pocket before washing. Reshape and air dry. Do not iron. Do not dry clean.