BoardingBlue Airlines Personal Item Under seat (Pink) 2-Day-Shipping Personal Item under seat for the airlines of American, Frontier, Spirit, etc. size-Zipped-In : 16"x12"x8" ideal for Spirit, Frontier, Jetblue, America Airlines It is also the size as a free carry on for most of the airlines. Multiple pockets for travel accessories, including charger, Ipad, water bottle, ticket, etc Friendly Reminder: Please Do NOT Pack Too Much. Or It may cause the bag oversized.