STORAGE: Essential organization pocket Stretch overflow pocket Side stretch pocket for water bottle or essentials Crux 2L Reservoir with Quicklink System DESIGN & DETAILS: Rim Runner X22 hydration backpack provides ample room and plenty of comfort in on versatile pack Equipped with a command center harness, load bearing hip belt, and removable sternum strap Designed with an air support back panel designed for maximum air flow on hot weather hikes