What Our Gearhead® Experts Are Saying: "I’ve worn the Swift Cap on everything from hot summer trail runs to exposed alpine hikes—it’s breathable, packs down easily, and stays put even when I’m moving fast. The dark brim cuts glare, and I never feel overheated under it."When the sun’s high and the miles are long, the Swift Cap is the lightweight shield we trust. Outdoor Research crafted this ultra-breathable cap with recycled bluesign®-approved nylon that wicks moisture, dries fast, and delivers reliable UPF 40+ sun protection. Whether we're logging trail time or pushing up a ridge, it keeps us covered without adding bulk. We love the thoughtful touches: the dark underside of the brim reduces glare, mesh panels increase ventilation, and a TransAction™ headband manages sweat when the pace picks up. The low-profile fit slides easily under a helmet for alpine missions or bike rides, while the adjustable back buckle dials in a secure fit on the fly. At just 2. 5 ounces, it disappears in our pack but stands up to the toughest conditions.