Cvlife Tactical Hydration Backpack 3L, Ultralight Water Bag, And Running. Large Capacity High Quality: The size of our hiking backpack is 18.5 x 10.5 x 7 inches and has a large capacity of 22L. The sandwich between the outer pocket and the middle pocket of the water backpack provides larger additional capacity, providing you with ample space to store essentials. The tactical hydration pack backpack is made of 900D x 600D PVC high-quality material with excellent tear and wear resistance to meet the needs of outdoor adventures. Multiple Pockets and Compartments: Our 3L hydration backpack has 6 zipper pockets, and the mesh compartment inside the backpack allows you to easily separate and organize items. The main pocket can store a 15-inch laptop. Your helmet can be stored in the center clip-on layer, and extra water bottles or umbrellas can be placed in the mesh pockets on the sides for easy access. Waistband pockets measuring 7 x 4 inches on both sides provide easy access to cell phones, keys, snacks, and more. Professional 3L TPU Water Bladder: CVLIFE large-capacity 3L water bladder is made of TPU material, which is BPA-free, odor-free and has a 3.5'' large open mouth, which is easy to clean and add ice cubes. The 3L capacity can meet your water needs for a whole day, ensuring you can replenish water in time during hiking and hunting. MOLLE System: MOLLE webbing is specially designed to be combined with other equipment. You can attach additional tactical bags or equipment to facilitate your portable access to items during hunting, such as sunglasses, D-buckles, etc. Comfortable and Lightweight: The back and shoulder straps of the heavy duty hydration backpack are breathable and padded to make you more comfortable and cooler during your hikes. The lightweight water day pack keeps you relaxed during your runs, and the outer pocket contains a keychain for easy access. Our large-capacity water bladder backpack has everything you need for a day trip.