1. Water-resistant fabric, breathable back system to reduce the load 2. Large capacity design, can fit a 15.6-inch laptop 3. External USB charging port and headphone hole, fast charging, you can listen to music while walking 4. Suitable for short-distance business trips, daily commuting 5. Material: fabric Oxford cloth, polyester lining 6. Size: backpack 21 x 12 x 42cm, shoulder bag 21 x 5 x 23cm, coin purse 18 x 1 x 10cm 7. Weight: 0.57kg