Mountain bikers and hikers alike will love the features of the CamleBak Lobo. This sleek hydration pack is perfect for 3+ hours of hiking or biking. With the external fill 100 oz Antidote Reservoir and 200 cubic inches of cargo space, the CamelBak Lobo is an ideal backpack hydration system for 3+ hours on the trail. The new Anitdote reservoir features a quick-snap cap that tightens in a quarter turn and a quick-disconnect tube system. The CamelBak Lobo also features an Air Channel back panel for enhanced ventilation.