FeaturesMaterial: NylonWater-resistantAnti-theft back cushion pocket External USB port for your powerbank or phoneHeavy duty handleThe Kingsons Anti Theft Smart USB Series 15.6\" Laptop Backpack has been uniquely designed for the traveller who is security conscious and prefers access to the internal compartments only through the back of the pack. There is only one external zipped compartment located below the padding on the rear of the backpack for easy access to travel documents or a phone and three internal zipped compartments.Made from high-quality, water resistant nylon fabric, this Smart Backpack has an interior laptop pocket and compartments for additional storage. It boasts an external USB port for connection of your powerbank secured within your pack to your phone secured on the sucking patch conveniently located on the shoulder strap. The back of the rucksack offers a cushioned pad for those heavy loads and a durable handle perfectly designed to attach to a luggage trolley.