ALPS Mountaineering Arvada 3L Hydration Backpack Hiking Day Pack With Bladder

New never used no tags Comes with new bladder Great lightweight pack with multiple compartments and stash pockets 3-liter reservoir is treated with an antimicrobial Metallocene film; reservoir is made in the USA UltraValve prevents air or backwash from travelling back into the tube, allowing for an even flow of water and reducing the chances for bacteria to enter the system 3-way articulating bite valve has a twist-open feature for free-flowing water supply when needed Insulated tube sheath prevents water from freezing Inline quick-connect valve allows the hose to remain attached to the pack while refilling or cleaning the bladder Roomy main compartment has a hydration sleeve with port Side neoprene water bottle pockets; front stretch neoprene pockets Padded back panel with airflow channel increases ventilation Rescue whistle buckle on sternum strap