Storage Space & Pockets: A separate laptop compartment holds a 15.6-inch laptop as well as 15-inch, 14-inch, and 13-inch laptops. A spacious packing compartment for daily necessities, tech electronic accessories, and a bunch of other items, makes your items organized and easier to find. Comfortable and Sturdy: The breathable mesh shoulder straps with plentiful sponge padding and the chest belt help relieve the stress from your shoulder. The shoulder straps sit firmly on your shoulder, so you don't have to worry about the straps slipping down and hurting your shoulder from a heavy bag. The laptop backpack with Airflow three-dimensional ventilation design helps with air convection and heat elimination. USB Port Design: With a built-in USB charger outside and a built-in charging cable inside, this USB backpack offers you a more convenient way to charge your phone while walking. It's a great tech gift for him from wife, daughter, and son. Please note that this backpack doesn't power itself, the USB charging port only offers an easy access to charge. When you clean the backpack, remove the USB charging cable. Water Resistant & Durable Material: Made of water-resistant fabric and durable metal zippers. Ensure a secure & long-lasting usage every day & weekend. Serve you well as an office work bag, slim USB charging bagpack, large student bookbag for boys, girls, teens. Practical Storage: The laptop backpack's front pockets with zippers are easy to store a water bottle, reading glasses, and a bunch of other items, a notebook, pens, and pencils. The notebook computer bag's side pocket holds compact umbrellas and other small items.