1. Travel Backpack: Convenient for security checks, backpack design, holds up to 18-inch laptop, can be opened 90 to 180 degrees, safe and quick-opening at the airport, to ensure easy air travel. Designed for air travel. Can be used as a travel backpack for men or a spacious college backpack, professional laptop backpack. Single international travel, overnight backpack camping, hiking backpacks, with USB rechargeable large capacity backpacks. 2. Anti-theft Backpack: The back is designed with anti-theft pockets to protect your valuables from theft, such as mobile phones, passports, bank cards, cash or wallets. Perfect for daily air travel. Indoor/outdoor activities, international travel, camping, hiking and overnight trips. 3. Large Capacity and Portability: The oversized design compartment with opening provides large storage space for easy removal or placement of clothes. Two front zipper pockets for mobile phone, wallet or keys, glasses, books and some small items. Side pocket for kettle or umbrella. Stable soft handle with foam top for easy carrying. Luggage straps allow the backpack to be attached to the luggage compartment/case and slide the upright handle for the luggage compartment for easy transport. 4. Back U-shaped three-dimensional ventilation design of science and technology backpack, air convection, ventilation and heat dissipation. Comfortable, breathable mesh straps and rich spongy pads help relieve stress on the shoulders. Adjustable shoulder straps relieve the shoulder. The ergonomic design ensures that the backpack's gravity is distributed, making it comfortable to carry even when full of all gear. 5. USB Port: The practical design is equipped with a USB charging port, which is convenient for charging your electronic devices. Connect the devices with external cables and internal your own power bank. Tip: Power bank is not included.