【STORAGE SPACE & POCKETS】 A separate laptop compartment holds 15.6-inch laptops as well as 15-inch, 14-inch, and 13-inch laptops. A spacious packing compartment for daily necessities, tech electronic accessories, and a host of other items, making your items organized and easier to find.【COMFORTABLE AND STURDY】 The breathable mesh shoulder straps with ample sponge padding and the chest belt ensure the shoulder straps attach firmly to your shoulder, so don't 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 on the 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 does not power itself, the USB charging port provides easy access to charging. Remove the USB charging cable when cleaning the backpack.【WATER-RESISTANT AND DURABLE MATERIAL】 Made of water-repellent fabric and durable metal zippers. Ensure safe and long-lasting use every day and weekend. Suits you well as an office bag, a slim USB charging bag, a large student backpack for boys, girls, teenagers.【CONVENIENT STORAGE】 Laptop backpacks with front zippers, easy to hold a water bottle, readers, and a host of other items, diary, pens, and pencils. Notebook computer bag Side pocket holds compact umbrellas and other small items.