Business Smart 15.6 Inch Laptop Backpack Convertible Expandable Anti-Theft

📋 CONDITION   * Outer box is damaged, but product inside is brand new, unharmed.  📃 DESCRIPTION   * INTELLIGENT INCREASE DESIGN - This backpack has smooth zippers on the back side. Once pull on the intelligent zipper, the invisible compartment will show up and equipped with extra 50% of space. Best choice for short journey and easy your daily life.  * INVINIBLE WATER BOTTLE POCKET - Made of newest high-tech waterproof material which flexibly fixed bottle or umbrella to prevent wetting out. Backpack's external USB charging port and built-in cable connected with your power bank inside which will charge your phone more easily. (Power bank does not included)  * CONVENIENT STRUCTURE - An invisible card pocket on the shoulder strap, easily taking out the transportation card to pass underground subway gate or pay on bus. The back has a strap which can hold the backpack upright on the luggage's pull rod for easy traveling.An invisible zip pocket on the back to place your iPhone, keys and wallet conveniently. Anti-explosion double zipper of main compartment is anti-slashing and water resistant, this would increase the security of your stuff inside  * MULTIPURPOSE - Roomy backpack (12.5''L*6.2''W*17.6''H) with laptop compartment (lined with soft flannel) protects 15.6'' Laptop and iPad. This backpack is made of water-