With built in USB charger outside and built in charging cable inside,this usb backpack offers you a more convenient way to charge your phone while walking. It's a great tech gift for him from wife, daughter and son. Please noted that this backpack doesn't power itself, usb charging port only offers an easy access to charge

Lightweight & Sturdy: Many padding in the back gives you maximum back support. Comfortable soft padded back design with thick but soft multi-panel ventilated padding. Breathable and adjustable shoulder straps relieve the stress of shoulder. Foam padded top handle for a long time carry on