New Backpack with Expandable Function and USB Port

Slim Business travel size of 16.9 by 11.5 by 5.1 inch that carries everything you need with this expandable backpack that includes an upper handle and side handle to hand carry, and also detachable shoulder straps that can be organized to convert into briefcase, and also have the back trolley sleeve design for putting on trolly luggage when not backpacking.

Expandable volume size from 17 to 23 liters and also with practicality functions; a USB outlet port to charge while you are moving; a card zipper pocket on the shoulder strap for fast access to bus, metro, subway; a slip pocket holder for any computer laptop that under 15.6-inch and also with a hideable bottle holder.

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