Large-Capacity Waterproof Business Commuter Laptop Backpack with USB PortFeatures:1. Made of PVC encrypted polyester fabric, waterproof and wear-resistant2. The trolley case fixing strap design on the back makes traveling more convenient3. Back air circulation and diversion design, comfortable and breathable4. Side USB interface design makes charging more convenient5. Adjustable shoulder strap, easier to carry6. Metal double zipper design, smooth and durable7. Widened handle design, comfortable and not tight8. Diamond facet structure design, three-dimensional and stylish9. Reflective strip design, safe and secureProduct parameters:1. Material: Oxford cloth, polyester2. Computer size: 15.6 inches3. Function: breathable, anti-theft, burden reduction, large capacity4. Product size: 44 x 30 x 15 cm5. Weight: 720g6. Note: Only backpacks will be shipped, nothing else