Storage Space and PocketsA separate laptop compartment can hold 15.6" laptops as well as 15", 14" and 13" laptops. A spacious packing compartment holds daily essentials, tech electronics accessories and a bunch of other items to keep your things organized and easier to find.FunctionLuggage straps allow the backpack to be placed on the luggage/suitcase and slide over the luggage upright handle tube for easy portability. Great for international plane trips and day trips, as a travel gift for men.USB Port DesignWith a built-in USB charger outside and a built-in charging cable inside, this USB backpack provides you a more convenient way to charge your phone while walking. This is a great tech gift from his wife, daughter and son. Please note that this pack does not power itself, the USB charging port only provides convenient charging access. Remove the USB charging cable when cleaning the backpack.Waterproof and Durable MaterialMade of waterproof fabric and durable metal zipper. Ensure safe and long-lasting use every day and weekend. Provide you with professional office work bags, ultra-thin USB charging bags, college high school large student backpacks, suitable for boys, girls, teenagers.Convenient StorageLaptop backpack front zippered pocket for easy storage of water bottle, reader and a bunch of other items, iPad, journal, pens and pencils, iPhone. Laptop bag side pockets hold a compact umbrella and other small items.