What Our Gearhead(R) Experts Are Saying:"This pack is the ultimate trail companion. The 3L reservoir keeps hydration effortless, and the Air Support(TM) Back Panel ensures I stay cool during climbs. With storage for tools, layers, and even a helmet, it's versatile enough for any ride."The CamelBak M. U. L. E. 12L Hydration Backpack is a trail-riding essential, designed to keep you hydrated and organized during epic bike adventures. Featuring a 3L Crux(R) reservoir with a Quicklink(TM) system, this pack delivers all the hydration you need to push through challenging rides. The Air Support(TM) Back Panel, paired with a 3D Vent Mesh Harness, provides maximum ventilation and lightweight comfort for all-day rides. Storage options abound, with integrated carry pockets for tools and a stretch overflow pocket for stashing layers or a rain jacket. The Magnetic Tube Trap(TM) keeps your hydration tube secure and accessible, while a helmet carry and removable waist strap add versatility and stability. Constructed from sustainable materials and designed for durability, the M. U. L. E. is your perfect partner for making every ride count.