Dimension: Internal dimensions: 16.73 x 10.43 x 5.5 inch (L x W x H); External dimensions: 17.32 x 11.02 x 5.5 inch (L x W x H). The computer compartment dimensions: 16.53 x 10.24 inch (L x W). The extra internal pockets can organize your pens, phone and notobooks. The backpack provides a thick padded foam section for your laptop, that protect your laptop against accidental impacts. Compatible with Notebook Computers 11-11.6 inch, 12, 13-13.3 inch, 14 inch, 15-15.6 inch and up to 16 inch; USB Charging Port and Luggage Strap: With built in USB charging port outside and built in charging cable inside, this backpack offers you a 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 charging device. Back luggage strap allows backpack to slide over the luggage tube, secure your backpack in place, provides a convenient way to carry the backpack and release your shoulder. Waterproof Ha