40L Expandable Waterproof Backpack with USB Charging Port

Storage Space & Pockets:One separate laptop compartment hold 17 Inch Laptop as well as 15 Inch,14 Inch and 13 Inch Macbook/Laptop.One spacious packing compartment roomy for iPad,mouse,charger,binders,books,clothes,ect. 2 Pockets on the front of the bag, Make your items organized and easier to find.

COMFY&STURDY: Comfortable airflow back design with thick but soft multi-panel ventilated padding, gives you maximum back support. Breathable and adjustable shoulder straps relieve the stress of shoulder. Foam padded top handle for a long time carry on

FUNCTIONAL&SAFE:A luggage strap allows backpack fit on luggage/suitcase . With a hidden anti theft pocket on the back protect your valuable items from thieves. making your journey and travelling more convenient wherever you go.

USB PORT DESIGN:With built in USB charger outside and built in charging cable inside,this usb backpack offers you a more convenient way to charge your phone while walking. Headphone Jack: you can listen to your favorite music on the go hands-free.

DURABLE MATERIAL&SOLID:Made of Water Resistant and Durable Polyester Fabric with metal zippers.Ensure a secure & long-lasting usage everyday & weekend.Serve you well as professional office work bag,slim USB charging bagpack, perfects for business traveling, weekend getaways, shopping & outdoor activities in daily life. Good Gift for college high school big student for boys,girls,teens,adults