Amazon.com: LOVEVOOK Large Travel Backpack for Women & Men 。?【Versatile & Airline Approved】Measuring 18*14*8 inches, this carry on backpack fits under the seat or in the overhead compartment, approved by Spirit, Frontier, JetBlue, and other budget-friendly airlines, making it the perfect personal item for air travel. ?【Spacious & Organized】With a 40L capacity, 4 compartments, and a lot of pockets, designed to allow you to easily separate and organize your travel personal items, this travel backpack can accommodate 3-7 days worth of travel items. ?【3 Extra Packing Cubes & Wet Pockets】This carry-on bag includes 3 extra packing cubes – 2 storage bags and a shoe bag – as well as a built-in wet compartment pocket. Perfect for storing wet clothes, towels, and toiletries, these packing accessories ensure your belongings remain dry and prevent any leaks or moisture from affecting your other items. ?【Durable & Comfortable】Built to withstand the challenges of travel, this carry on backpack is made from tear-resistant, water-resistant, and abrasion-resistant materials. It also has adjustable shoulder straps, a padded back panel, and shoulder straps, ensuring comfort during long trips; a travel essential. ?【Secure & Practical】This large travel backpack features a suitcase-style opening for easy access to your belongings at security checkpoints. There\'s also a padded electronics compartment and umbrella/water bottle pockets on the side. A luggage strap is attached to the back.