Carry on Backpack is 11.81*7.87*16.92(inches) in color “peacock.” New, has never been used! Two main pockets for larger clothing items; Two laptop compartments for a 13-inch ipad and a 15.6-inch laptop. Also comes with a waterproof wet bag and a separate shoe compartment, the wet bag is made of high-density waterproof material to help you separate wet and dry items. Anti-theft Multifunctional Backpack:With trolley sleeves, the backpack can be slipped on the drawbar of a suitcase. There is a hidden anti-theft pocket on the back. Perfect as a carry on, weekend bag, an everyday backpack, or laptop backpack. Laptop backpack USB interface：With external built-in USB charger and internal built-in charging cable, this USB backpack provides you a more convenient way to charge your phone, ipad and laptop. Please note that this backpack does not include the power bank itself, the USB charging port only provides convenient charging. Additionally, bag can be freely expanded 180 degrees.