Airline Approved Personal Item Backpack: Avoid extra luggage fees! Designed at 18H x 13.5L x 8W, this MATEIN carry on backpack meets most airlines personal item size requirement, and can be placed in the overhead luggage compartment and under seat for airlines, suitable for Spirit, Frontier, Easy Jet, Jet Blue, and other airlines. This carry on backpack for airplanes features a TSA-friendly 90-180° opening design lets you breeze through security checks and keep other items tidy Spacious & Organized: Everything in its place! This backpack luggage for travel stay organized with 4 main compartments, the backpack suitcase's main compartment with double zippers has enough storage room to store like a suitcase, fits up to 2-3 days short trip. The separate laptop compartment offers enhanced padding to protect your 17" laptop. The front compartment has many pockets to keep your belongings organized. The Secure hidden pocket design can protect your passport, wallet & valuables