1. Material: Terylene 2. Internal structure: can hold a 12.9-inch tablet computer 3. Reinforced shoulder straps, stronger load capacity 4. Key fob spring back, a second to open the door 5. Scratch and wear resistance, strong tear resistance 6. Durable zipper, smooth and fluid without jamming 7. Rotating laser nail, according to the back self-adjustment more comfortable 8. Size: 49x24.5x5 cm 9. Weight: 0.47 kg