This travel bag can be used as a carry-on backpack, due to its luggage strap and USB charging port design, which makes it a practical carry-on back pack. With padded shoulder straps, waterproof polyester and breathable sponge on the back, our spacious daypack will keep you feeling comfortable on long journeys. Laptop Bag: This laptop bag has a separate compartment which is large enough to accommodate laptops and tablets up to 16 inches, 15 inches, 14 inches, and 13 inches. Seperate Shoe Compartment and Wet Pocket : Organize your items with 2 main compartments, which come with many interior pockets for storage and organization. With a seperate shoe compartment, going to the gym, hiking or traveling the city has never been easier! Our suitcase backpack also also a seperate wet pocket to keep your wet clothes away from other items keeping your mind at ease as you protect your personal items. Airline Approved : Our travel backpack is approved for TSA and all major airline carriers as a convenient carry-on bag. Easily stowaway under the seat or in the overhead bin. It also has a hidden anti-theft pocket on the back, which protects your valuables.