Anti-Robot Security. USB charging port. For laptop up to 15.6." · Anti-robo backpack: the closure of the main pocket is completely hidden, preventing it from being open without you becoming aware. · Small closure on one of the straps to have easy and quick access. · Interior with multiple separators and organizers: more space saved. · Suitable for laptops up to 15.6.” · USB external port: for cellular loading, tablets and laptops. · Material: Polyester exterior, 210D interior. · The design includes safety reflective strip. · Dimensions: 31 x 13 x 45 cm.