Features:

*Padded shoulder straps and back support for best ventilation.

*Big compacity for laptop, books, and others

* Best solution for give away/donation gift to customers, family, students

* LOGO can be customized--printing, embriodery, rubber, metal, PU etc.

* Large compacity with full open

*with USB port

*Expandable 40% space

Travel Backpack Carry On Travel Rucksack Expandable Travel Backpack Luggage Carry-on Bag