1. [Airline Approved Personal Item Bag]Travel backpack meets airline carry-on requirements, suitable for placing on the top or under the seat in flights as personal item. 0-180 degrees opening zipper helps you pass through the security check quickly. It is approved by most airlines, such as Easy Jet, Spirit, Southwest, Jet Blue and Frontier Airlines. (Size: 43 x30 x 20 cm/16.9 x 11.8 x 7.9 inches ; Weight : 2LB) 2. [Convenient Charging Hole Design]This college backpack designed with a convenient charging hole design, you can connect the power bank inside the backpack and the mobile phone outside, it is a more convenient way to charge your phone while walking. (Note: The power bank and cable are not included). Perfects for weekender, bussiness trip, weekend getaways, shopping & outdoor activities in daily life. 3. [Spacious Capacity & Compartments]This 35L laptop backpack has multiple compartments and can meet the needs of short travel or business trips of 3-5 days. The laptop compartment is filled with EVA foam to provide optimal protection for your 15.6" laptop and 12.9" iPad, the wet bag is designed to store wet items, and the front compartment has many pockets to keep your small items organized and easier to find. 4. [Luggage Strap & Practical Design]This carry on travel backpack features a hidden padded shoulder straps which can be easily hidden inside the back panel. The luggage strap design allows the personal item bag to fix on the luggage tube, making your air travel and business trips easier. The top and sides of the backpack are designed with soft handles for easy daily use.