Recommended backpacks for business travel should have these characteristics: 1. Waterproof fabric, stiff bag type, solid color is preferred, simple design. 2. If the laptop is installed, it is best to have a computer compartment or independent computer warehouse. 3. The internal structure of side bag, front bag, zipper bag, card position is better, can be classified into different items. 4. Ergonomic shoulder strap and back pad design. Advantages: 1. You can put your cards on the shoulder strap. You can put your bus card or meal card when you go out. 2. There is a pocket at the waist in the back, which can hold a longer wallet. I carry a longer montblanc. Put it inside, the waist support is very nice. 3. The computer partition layer and the main partition layer are designed separately, and will not affect each other. At the same time, the small partition is also designed well, and can be placed neatly.