Light and ventilated suspension system with 3D-tensioned mesh provides breathable support and 4" of torso adjustability Included raincover made with PFC/PFAS-free DWR keeps your gear dry and protected Panel loading design with a burly, durable zipper delivers wide access to main compartment Internal hydration reservoir sleeve with hose port in backpanel accommodates up to a 3L reservoir (sold separately) Dual zippered hipbelt pockets, side stretch mesh bottle pockets, and a zippered pocket on top of the front panel offer spots for essentials to be secure and within reach Stow-on-the-Go trekking pole attachment allows you to stow and deploy poles in seconds