Comfort and SturdyThe backpack OUTSIZE is 18.5*12.6*9 inches, 33L. BIKROD laptop backpack is made of high quality water-resistant, sturdy fabric provides a sturdy and chic exterior. Comfortable airflow back design with foam, gives you maximum back support. Breathable and adjustable shoulder straps relieve the stress of shoulder.Ensure a secure & long-lasting usage everyday & weekend. Classic DesignMain compartment with 15.6 laptop pocket and an extra padded sleeve for tablets or Kindle, can storage books and business files while still having room for daily necessities, front compartment with organizer and 2 front pockets provide plenty of capacity for the organization. 2 elastic side pockets can fit different size of bottles. Multi FunctionBIKROD Laptop backpacks with a built-in USB charging port, easy to charge your phone when on-the-go (Not includes the power bank). With a luggage belt on the back panel, it is easy to put on the luggage handle when travel. One hidden ant