Two types can choose.

2.0 Version backpack:

Regular style, width expandable 6cm.Suitable for daily office.

3.0 Version backpack:

Upgrade style,add computer compartment behind the backpack,larger capacity. Suitable for travel.

Please choose according to your needs. Multi-layer large capacity2.0 Version backpack can fit 15.6-inch laptop, can accommodate 2-3 days clothing.

3.0 Version backpack can fit a 15.6-inch laptop, can accommodate 5-7 days clothing, make you worry-free travel.