Extra Large Waterproof Gaming Backpack, 18。?Extra Large Capacity and Stylish: 18 inch travel laptop bag was designed with 50 L capacity which can be converted into commute backpack. Padded laptop compartment can fit most 18.4,18,17.3,17,15.6,15 inch laptops. This work backpack with more space for all your items such as tablet, notebook, clothes and other travel essentials ?TSA Approved and Multipurpose: The airplane backpack measures 21.5 x 15 x 9.5 inch. It can be opened 180 degrees easily and lay-flat which is convenient for pass through airline security quickly without taking out your laptop. Suitable for hiking, air traveling, vacation, international trip ?Anti Theft and Organization: Multiple pockets of this computer backpack offers plenty of room. Sturdy luggage strap allows backpack fit to luggage suitcase quickly, slide over the luggage upright handle tube for easier carrying. An theft proof pocket on the back could protect your valuable items ?Sturdy and Water Resistant: Extra large carry on backpack constructed of polyester fabric with excellent stitching technic which makes it waterproof. Multifunctional front compartment can help to organize your keys, small items and keep them safe. Serve you well as a professional office work bag or business casual daily daypack ?USB Charging Port: Laptop backpack with external USB charger port and built-in charging cable which offers a convenient charging by connecting your electronic device anywhere and anytime. Great choice for Valentine\'s Day gifts