Built for moving fast and covering long distances, the Beta Light UL 45 is the ultimate blend of durability, lightweight construction and load carrying comfort. Black Diamond partnered with Challenge Sailcloth to bring their Ultra 200 body fabric to their Beta Light series to create one of the lightest yet most durable packs on the trail. This durable fabric, combined with taped seams and a roll-top closure, make the pack waterproof and able to stand up to day-in-day-out use. A simple, Power Mesh stretch pocket and two side pockets provide plenty of external storage options, while the pack's running-vest inspired shoulder strap harness system provides support and comfort with additional snack pockets and water bottle storage options. A removable hip belt, lightweight aluminum frame, and removable foam back panel provide options for reducing weight even more.