The light, agile Aerios 35 is the pack for long day hikes and multiday minimalists. Interchangeable hipbelts and harnesses let you dial in the fit, the main compartment’s roll-top closure adds up to 10L of extra capacity, and the ultralight – but highly durable – 210D Hadron LCP (Liquid Crystal Polymer) pack fabric resists abrasion. Inspired by running vests, the harness uses a patent-pending two-point system for precise adjustment and has secure front pockets for soft flasks and smartphones.