Whether wearing on your back or wheeling through the halls at work on campus or at the airport travel with comfort with the hp roller backpack full padded pocket with secure fastener for laptops up to 39 62cm 15 6 store and go with a padded pocket specifically designed for up to 39 62cm 15 6 laptops accessible expandable water bottle pockets internal organizer panel and extra accessory pockets push button 45 72cm 18 two position retractable trolley handle pull out the two p