travel backpack women 40l carry backpack flight approved tsa 。Brand New Flight Approved Size : Backpack meet the portability requirements of most airlines.Backpacks easily open 0-180 degrees and fits under your plane seat or in the overhead and help you get through security quickly Expandable Large Capacity Backpack:Our backpack can be expanded from 35 L to 40 L.Multi-pockets and zoned storage design, which is very spacious and can easily store 3-7 days of travel gear (Size:17.3 * 12.2 * 8.3 inch ;Weight: 2.5 lb ) USB Charging Hole Design :This large backpack with a USB charging hole design makes it easier for you to charge your phone or other devices while traveling (The power bank and cable are not included) With Trolley Sleeve & Anti-theft Pocket: This 17 inch laptop backpack comes with a luggage strap that can attaches the backpack to the suitcase.A hidden anti-theft zipper pocket can store valuables such as mobile phones or cards to prevent theft