1. You deserve a large capacity that can hold a laptop, a power mouse, a phone, a tablet, a magazine, etc2. The back can wear the pull rod belt design, the computer bag is fixed on the pull rod school/business trip no matter how far the road is not tired3. Light design, make travel more labor saving, the body weight is only 0.385kg, lighter than a bottle of 550ml mineral water so that you travel without burden4. Lengthen the fuzz inside, lengthen and fine fuzz, to bring gentle care to the laptop inside5. Splash resistance and wear resistance, external selection of fine fabric, waterproof and breathable characteristics