Though it is a great choice for a day hike, the Chaos really excels in mountain bike country. The low-profile design holds all your downhill/freeride gear, plus it serves up enough water for 1 to 2 hours of riding. Gear straps with quick-release buckles hold full-face helmets securely. Shin and elbow guards can be strapped onto the outside of the pack. 1680-denier Ballistic nylon plus #10 YKK zippers make this pack as durable as they come. Air Director back panel with Air Mesh harness enhances ventilation. Independent Suspension and waist harness load stabilizers. Strap management secures loose webbing.