Spacious: The spacious main compartment can fit a laptop up to 15.5", as well as all of your work or school essentials. USB port: Featuring a built-in USB charger on the outside of the bag, with a charging cable inside, a handy way to charge your devices on the go! (Note: Requires a portable power bank). Backpack: Get a USB charging port backpack. Ball compartment: Contains a stretchy mesh net for storing a ball or helmet! Colours: Choose from black or grey. Comfortable: Made with Oxford fabric, the backpack offers thick, padded straps and breathable mesh for comfortable shoulder support. | USB Charging Port Backpack - Black | Wowcher