For glacial traverses, above-treeline ultras, desert hikes and any adventure where you're working up a sweat under an intense sun, the ActiveIce Cap wicks perspiration, keeps you cool and provides UPF 50+ protection. ActiveIce™ fabric actually lowers skin temperature as it wicks perspiration, keeping you cooler than if you were wearing nothing at all. The covered split brim folds for easy packing, and reflective piping makes you easier to see when the sun finally sinks below the horizon.