1. Breathable honeycomb mesh backing, high-density mesh can quickly dissipate heat and breathe 2. Three luminous modes of LED light: fast flashing/slow flashing/constant light 3. External USB charging interface design, convenient and fast charging 4. The back of the backpack is equipped with a trolley pocket, which can be tied to the suitcase 5. Selected high-density and high-elastic PE surface compartment, you can freely adjust the combination, equipment protection and fixing belt, can fix and protect equipment 6. Fabric: Cationic water repellent fabric 7. Lining: encrypted velvet 8. Inside: Removable sponge partition 9. Capacity: one machine with multiple mirrors, flash, charger, battery, mobile phone, 15.6-inch laptop, etc. 10. Weight: 0.88kg 11. Dimensions: 33 x 18 x 46 cm