• Slim & Expandable Design: Slim style for light travel and commute, 200% Expandability when more belongings and easily to switch between the both. Serve you well as professional office work laptop case, slim USB charging bagpack for adults
• Perfect Protection: One separate compartment which velvet lining to take care of the laptop well, the robust outer material of water-resistant polyester is durable and dirt-repellent and spills
• USB Port Design: 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. Please noted that this backpack doesn't power itself, usb charging port only offers an easy access to charge
• Hideable Straps: The back pocket for hide straps that can be easy to switch between Backpack and Sleeve which for slip to another bag, also some books of A4 size in the pocket
• Custimer Service: If for any reason you are not satisfied with our product,please feedback to us, we offer 24 hours after sales service