Offering the protection you need to stay out of the elements, the Rab Trailhead Bivi is a stripped-down, waterproof sleeping bag cover that will keep the rain off your head. Featuring an open-face style, the Trailhead is less constricting than other bivis, letting you rest easy at camp. A zippered mesh vent keeps consistent airflow into and out of the bag overnight, so you don't wake up to a puddle of condensation soaking through your sleeping bag. Best of all, it weighs well under a pound and packs down to be just larger than a typical smartphone. With the Trailhead Bivi, getting from A to B is easier than ever before.