<p><b>Designed Specifically as Approved Personal Item size on Delta Airlines, Southwest Airlines, United Airlines, Jetblue Airways, WOW, Spirit Airlines, Frontier Airlines, Virgin America & Sun Country</b></p> <p>The bag features a back strap which conveniently slides down the handles of your suitcase trolley handles, meaning you can carry both your main carry on luggage and your underseat bag with great comfort</p> <p> </p> <p>The bag features a dual zip design which come with a mini padlock which can lock your zips together in order to prevent the bag being opened by non-key holders. The bag will fit 13" laptops and below, making accessing them during your flight very convenient.</p> <p> </p> <p>An adjustable shoulder strap means you can carry your bag on your shoulder, or by using the top tug handle.</p>