Amazon.com: LOVEVOOK 40L Travel Backpack for Women & Men 。Tired of overstuffed carry-ons that don\'t fit airline rules? This 40-liter travel backpack is sized at 18×14×8 inches—perfectly approved for Spirit, Frontier, JetBlue, and major carriers as a personal item or overhead bin bag. Four compartments plus multiple pockets let you organize a week\'s worth of gear without the chaos. Bonus: comes with 3 packing cubes and wet pockets to keep clothes separate from toiletries. Waterproof material protects your stuff, fits a 17\" laptop, and works just as hard for weekend trips as extended getaways. Whether you\'re commuting, traveling, or exploring, this backpack handles it all.