Perfect for trail running or light-and-fast day hikes, this lightweight and trim fitting pack is designed to haul a hydration bladder, food, and compact outerwear. Featuring our AeroForm(TM) backpanel for maximum airflow and comfort, a modular bungee system for compression or cargo hauling expandability, and a modular waist belt that can be positioned higher on the abdomen for superior bounce control.Driven by innovation, ARC’TERYX was founded to build better gear. They didn’t just focus on incremental advancements, but on radically improving the status quo. They began with climbing harnesses and then proceeded to tackle packs and apparel with the same single-minded obsession for creating the lightest, best performing, and highest quality products available. To realize their vision they’ve created groundbreaking new construction technology, developed paradigm-shifting designs and harnessed major fabric technology developments.