Less than two pounds, this fully waterproof roll-top pack is made with ALUULA™ shell fabric, a bonded and adhesive-free, durable fabric construction that exceeds standards for rough and rugged trails. Its unique material fusion method merges mono-polymer fibers at the molecular level to form a single substance with all the durability and ultralight weight, and no risk of delamination or fraying. Built for going far, its comfort construction includes a one-of-a-kind swivel hipbelt to distribute the load naturally, breezy backpanel design, and our patented compression system that can operate in motion. Engineered with the alpinist mindset to support backpackers for the long haul.