Large Capacity Password Lock Anti-Theft Laptop Backpack With USB Port Features: 1. Made of high-quality fabrics, the outer shell automatically slides off when exposed to water and is impermeable, waterproof and wear-resistant. 2. Customs password lock design, 999 password combinations are more secure 3. 180-degree opening and closing large-capacity dual compartment design, independent digital protection, functional compartments, convenient and orderly access 4. The back adopts 3D honeycomb back pad, which is breathable and comfortable. 5. Side USB interface design makes charging more convenient 6. Adjustable shoulder strap, easier to carry 7. Metal double zipper design, smooth and durable 8. Widened handle design, comfortable and not tight. 9. Diamond facet structure design, three-dimensional and stylish 10. Reflective strip design, safe and secure 11. The trolley case fixing strap design on the back makes traveling more convenient Product parameters: 1. Material: Oxford cloth, EVA, polyester 2. Can accommodate computer size: 15-16 inches 3. Function: breathable, waterproof, anti-theft, burden reduction, large capacity 4. Product size: 44 x 30 x 17 cm 5. Weight: 900g 6. Note: Only backpacks will be shipped, nothing else