Expandable Travel/Business Backpack with USB Charging Port

Constructed from high-density oxford material, this travel backpack is both waterproof and long-lasting. It features an external USB charging port with a built-in charging cable for convenient charging of your smart phone (USB port only, power bank not included). It can accommodate laptops up to 15.6 inches and is expandable from 16cm to 23cm. The interior compartment is breathable, spacious, and includes anti-theft and multifunctional features. The tie rod fixing strap makes it suitable for attaching to a suitcase.