Design: 

Storage Space & Pockets:One separate laptop compartment hold 15.6 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.Mesh pockets at side for water bottle and compact umbrella 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
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

Dimensions:

Fit 15.6’’ Laptop: 17.71 X 5.11 X 11.41 inch 

Fit 17.3'' laptop:  18.89 X 6.69 X 12.20 inch