The appellation "airline approved" for this bag is misleading insofar as many airlines will not accept this bag because its dimensions exceed requirements, for example, Jet Blue. I do bear some responsibility for my error, as I ordered this in haste thinking it would be "airline approved". I am giving this one star, to punish Sherpa for its misleading representations, because though they do warn people to check with their airline, they have the name "airline approved" in the name of the product which can be reasonably foreseen to mislead some people into thinking that all airlines approve of it, while the reality is perhaps only some do. Indeed, when one goes to Sherpa's website, one is informed that the large sized carrier, which is what this one is, is not accepted by airlines. It states: "(*Please note, based on written guidelines, Southwest Airlines accepts carriers only in small; all other airlines accept only small and medium sizes)."