Weight: 0.54KG2. Capacity: 29*46*16cm3. Fabric: Oxford cloth + polyester 4. Structure: main bag/secondary bag 5. Function: Waterproof, wear-resistant, anti-theft, and protect from light6. Use scenarios: students, tourism, business, business trips. Features: 1. USB charging + headphone interface design: built-in data cable to connect to mobile power, external USB charging port to connect to mobile phone, freeing your hands, charging while walking and playing, integrating fashion and practicality; 2. Light weight: only 540g, equivalent to 6 The weight of the egg; 3. 3. Water-repellent Oxford cloth: stronger toughness and tear resistance; 4. S-shaped shoulder strap to protect the spine: S-shaped shoulder strap design, comfortable and convenient to carry, high-density foam, stable carrying weight; 5. Scientific layering, reasonable storage: front pocket + side pocket + computer compartment, large capacity to meet travel needs; 6. Elaborate design and high-quality hardware: the bag adopts a triangular reinforcement design, which is sturdy and durable; the smooth double zipper zipper is smooth and does not jam; the adjustable shoulder strap design is convenient and practical; 7. Creative design, multiple colors: make your backpack unique.