Airline Approved Personal Item : This carry on backpack measures 18x14x8 inches and can fit in overhead compartments and under airplane seats, making it suitable for budget airlines like Spirit, Frontier, Easy Jet, Jet Blue, and more. Large Capacity with Multiple Pockets : The travel backpack for women with a 40L capacity and 4 main compartments, this travel backpack can meet both your daily and travel needs. It can easily accommodate all your items for a 3-5 day trip. Includes 3 Packing Cubes and Wet Pockets : Our backpack for traveling on airplane comes with 3 additional storage pockets, including 2 carry-on pockets and 1 shoe pocket. The dry and wet separation pockets can hold toiletries and wet clothes. Practical and Comfortable Design : This large travel backpack features handles on the top and one side, making it a versatile hybrid of a backpack, duffel bag, shoulder bag, and travel bag.