NANSHI Breathable Hydration Backpack for Cycling with 2L Water Bladder Blue Laptop Backpack  (Black)

1 Large Capacity Bladder: Equipped with a 2L water bladder, it is convenient to store and drink water for outdoor activities at any time, made of odor free materials, and leak proof. 2 Lightweight: The water backpack is made of lightweight materials and is comfortable to carry without adding extra weight. Suitable for long outdoor activities. 3 Waterproof Fabric: This backpack is made of waterproof material, which can effectively prevent moisture from seeping into the interior of the backpack, providing protection for your valuables. 4 Comfortable and Breathable: This backpack has a comfortable shoulder strap and back pad, ergonomically designed to provide good support and absorb sweat. 5 Widely Used: This backpack isn't just for running and hiking. Suitable for almost all outdoor activities, such as running, cycling, camping, marathon and so on.