The Rab Hyperon is a quality choice for backcountry hikes. The outer fabrics feature a water-repellent treatment. A light rain shower wont require a rain cover, but for extended rain, its wise to use the included rain cover to protect the backpack. The hip belt is designed to move with your steps, allowing it to pivot independently from the pack. This reduces swaying, helping the backpack stay stable as you walk. - V-Trax back panel with stepless torso length adjustment - Suitable for back lengths between 43 - 53 cm - Back length is measured between the most protruding neck verterbrae and the level of the iliac crest - Carefully designed padding on the hip belt and shoulder straps - Internal divider that can be opened or closed as needed - Access to the main compartment from the top, bottom, and front panel zipper - Internal and external compression straps - Lid with internal and external pockets - Zippered side pockets - Stretch water bottle pockets - Hip belt poc