1. EXTERNAL USB CHARGING PORT: there's no any charger or power bank in this backpack, only with a replaceable USB extended cable. So you need to purchase a power bank and a usb cable to charge your phone or other devices. External audio jack designed, free your hands when listening to music.
2. DIMENSIONS & COMPARTMENTS:12.2" x 20.1" x 6.2", holds laptop 15/15.6 inch.2 Main Pockets & 4 Compartments & 7 INNER Small Pockets & 2 Sealed Side Pockets, easily carry your laptop, iPhone, iPad, pen, books, clothing, wallet, bottle and more.
3. WATER RESISTANT: Utilize water resistant oxford 900D fabric & durable waterproof-designed zipper, let your stuff avoid getting wet in backpacks when it drizzle.
4. COMFORT: Light-weight(only 1.48lbs) carrying shoulder straps (can hang glasses on) of stitching strengthen & updated breathable sponge of back. Ideal for using as book bag, travel daypack, for daily use at school, work, gyms etc. Casual style backpacks suits for college students, junior student, teen girls boys and adults.
5. 6 MONTH WARRANTY: All our backpacks have half-year warranty. Any problem please contact us freely, we will solve it asap.