- Main bag : Can accommodate more than 10 books or 5-7 days of travel cloths Built-in elastic bag or zipper bag can accommodate 16 " Laptop or books
- Secondary bag : Built-in Inter layer and small bag can accommodate iPad,notebook,phone,pen,wallet etc
- Side bag : this bag has elasticity,can umbrella,water bottle,tissue box etc
- Environmental Elastic Foam Cotton Handle
- High Quality bidirectional Pull head
- Cross Ventilation,ventilation and Heat Dissipation
- 20 mm Elastic Back pad
- Multiplayer Honeycomb Mesh Elastic Foam Back
- The Bottom Lining Cloth