Tilley T3.Three looks in one ! Snap up one side, both sides,or none at all .The original Aussie-style tilley hat. Available in cotton duck.It comes with a life time guarantee,if it ever wears out,falls apart, shrinks or mildew.Your hat comes with a non-absorbent foam liner in the crown for floatation,anti sweat band to help wick perspiration away from your forehead,adjustable, tuckaway wind cord.EXCELLENT SUN PROTECTION.All tilley hats have the highest certification rating: ultraviolet protection factor [UPF] 50+