The Waterproof Backpack Bag with External USB Port combines practicality with convenience for outdoor enthusiasts and travelers. Its waterproof material provides protection against the elements, ensuring your belongings stay dry in wet conditions. The external USB port allows for easy charging of devices on the move, adding another level of functionality to this versatile backpack. Bag size: Large Material: 100% polyester Made of eco-friendly waterproof canvas Imported Product measurements: Size: 15.75" x 11" x 6.7" inchGenuine leather zipper pullers and accessoryLaptop pocket, multiple small pocketsCan be used as hand bag and backpackUSB charging portAdjustable shoulder strapGood for school, casual using, business trip, mountain climbing