Trekmates Explorer Hats have been tested in some of the heaviest downpours the world has to offer The DRY membrane provides waterproof protection & excellent breathability while the outer shell provides a 50+ UPF rating to block out UV radiation emitted by the sun The Explorer hat from Trekmates has a waterproof & breathable insert & a wide brim for sun or rain in Britain protection The crown has EVA padding & the re are press studs on the brim for folding up There is an elasticated draw cord adjuster for securing if required ideal to be used in the warmer months or while exploring the great outdoors