Feature:1. WATERPROOF DESIGN: Hydration backpack with 900 sealed water resistant oxford fabric design, tear resistant, wear resistant, can well protect the items in the bag.2. HANDS FREE: Hydration pack can be very good to free your hands, from now on drinking water without one handed support, to ensure the safety of the ride.3. 3L WATER BAG: Hydration backpack pack carries a large capacity 3L water bag, to ensure the needs of drinking water during the journey.4. LARGE CAPACITY: Water bag backpack has enough space to carry belongings, books, medicine, etc., to meet the needs of most situations.5. WIDE APPLICATION: Water bladder backpack applicable to a wide range of places, suitable for sports, leisure, travel, etc.. Lightweight design, easy to carry and use.Specification:Item Type: Hydration BackpackProduct Material: Oxford Cloth, EVA.Package List:1 x Hydration Backpack