Mountain bikers who love the descent need a hydration pack that can hold all their gear. Osprey's Zealot 16 carries armor, tools, and full-face helmets securely and comfortably. You'll also have plenty of water for shredding trails when you fill the Zealot's 3 Liter reservoir. It’s slim profile keeps the load centered and close to your back, allowing for a better center of gravity as well as easier lift rides. The AirScape suspension and BioStretch ventilated harness maximize breathability and move with your body, keeping you cool and comfortable all day long.