LARGE STORAGE SPACE - Dimensions: 18 x 11.5 x 6.5 inches, a single laptop compartment can accommodate laptops up to 15.6 inches. Thick partitions to better protect the laptop not be collided by the other sharp items in the bag. Available for 15 Inch,14 Inch and 13 Inch Macbook/Laptop/Notebook like Dell, HP, Asus, Lenovo. One spacious packing compartment roomy for daily necessities, Suitable for daily life and travel. ★ULTRA-LIGHT WATERPROOF - Special ultra-lightweight fabrics reduce the weight of the backpack itself, and the ergonomic shoulder strap minimizes weight bearing. The back's breathable, the heat-dissipating design minimizes back pressure. Seamless zipper and thicker waterproof fabric can keep the contents of the bag dry and waterproof on rainy days. ★USB PORT DESIGN - There's a USB charging hole on the side of the computer bag to allow you to charge without opening your backpack, Please noted that this backpack does not contain Power bank. More convenient, Better save your time. Suitable for traveling, using at school, outdoor camping, business bag. ★FUNCTIONAL-SAFE - A luggage strap allows backpack fit on luggage/suitcase, slide over the luggage upright handle tube for easier carrying. The front and side buckles provide a good protection that prevent from unzipping the bag and stealing valuables.With a hidden anti theft pocket on the back protect your valuable items from thieves. Well made for international airplane travel and day trip.