1. Material: polyester, fluff2. It contains an independent double-layer shockproof laptop compartment to protect the laptop and reduce friction3. Large capacity, multi-layer partition design, reasonable storage of items4. The design of the bag box is easy to use5. Waterproof, not easy to penetrate, not afraid of rain and fog6. Detachable shoulder strap design, single-shoulder/hand-held/cross-body carrying modes7. There are thick sponges around the bag, wear-resistant and durable8. Comfortable handle, not easy to break9. Effectively protect the equipment from general scratches, dirt and abrasion10. External dimensions: 13.3 inch 36x27x9.5cm, 14.1 inch 39x28.5x9.5cm, 15.4 inch 39x28.5x9.5cm, 15.6 inch 42x31x9.5cm11. Internal dimensions: 13.3 inch 34.5x25.5x9cm, 14.1 inch 37.5x27x9cm, 15.4 inch 37.5x27x9cm, 15.6 inch 40.5x29x2.5cmNote: The product is only a laptop bag and does not contain other items