The XXL SturdiBagTM is larger that most airlines size requirements, but customers have told us for years that they use it for in-cabin, airline travel. All SturdiBags have our patented, award winning flex-height design. Features retractable privacy flaps on all mesh windows, easy access top opening, seat belt safety straps, padded shoulder strap and rear storage pocket. Accessories include an interior fleece pad, tether to secure pet inside carrier, and base board to prevent sagging. May exceed size requirements for air travel. Consult with your airline.