WENIG Anti Theft Business/Travel Backpack, USB Charging Port 。Sleek and durable, the Black TZOWLA Backpack is perfect for everyday use. Its modern design and sturdy construction make it a reliable choice for carrying essentials. Black Unisex Backpack with combo lock security, USB charging ports, anti-theft features. Never used, all tags included. The instructions for setting and changing the combo lock are included. This is a very durable/rigid bag-perfect for traveling or backpacking. I never used it but I did change the combo to ensure that it works, and I\'ve set it back to the factory combo (which is reflected in factory instructions). Note that there is trolley strap on the backside which allows you to securely place it over the handle of your rolling suitcase-this is a huge advantage for travel.