Made with premium smooth zipper and reinforced stitched fabric for durability. A computer compartment can hold a 15.6-17.3" laptop and mesh compartment, and the rear luggage straps help you secure your carry-on backpack to your luggage/suitcase. The airflow back is designed with thick but soft multi-panel ventilation padding to give you maximum back support. The backpack comes with a USB charger on the outside and you can also connect it to a power source. Connect your phone with an internal cable, an external cable, so you can walk or travel while your phone is charging.