40L Airline Approved Carry on Travel Backpack Laptop Luggage 。??【40L LARGE CAPACITY】Our travel backpacks enable you to pack all your travel essentials for a 3-5 day travel, which can hold 3-5 days\' clothing, a pair of shoes, your wallets, toiletries, a 17.3\'\' laptop, a 12.9\'\' iPad and so on. The side straps can also help you compress the pack when it is too full. ?✈️【BACKPACK FOR TRAVELING ON AIRPLANES】With an 18*14*8 inches size, this travel backpack meets the standard of personal item bags of airlines. It can be put on the luggage set and under the seat easily. The luggage strap on the back of the backpack allows it to be stably attached to a suitcase. ??【WELL-DESIGNED COMPARTMENTS】This travel backpack has 4 main compartments and 3 packing cubes supplied, which enable you to keep your things in order. Your shoes, toiletries, and underwear can be placed in separate packing cubes. There is also a side pocket for bottles and umbrellas. A separate dry and wet compartment allows you to store wet towels and toiletries. ??【DURABLE AND COMFORTABLE】 Made of waterproof and strengthed polyester, it can meet requirements for durability. We have specially reinforced the shoulder straps and zippers to ensure that it does not go wrong while in use. Padded shoulder straps and side handles make it easy to carry. ??【PRACTICAL BOX STRUCTURE DESIGN】 The carry-on backpack can be expanded 180° with a box structure, more convenient for you to pack things up. The dedicated electronic product compartment on the back can be used to store your