Backpacks are commonly used in our daily travels. They can be used to carry clothes, books and other daily necessities. But if you use it to hold easily damaged items such as mobile phones, tablets, ceramics, etc., you need to be extra careful, as even a small run may cause damage. The design of the carbon fiber backpack introduced below is very user-friendly. There is an inflatable bag on the inner layer. When the air bag is filled with air, it will greatly reduce the risk of damage to the items in the bag and protect valuable items to the maximum extent.