Lots of 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 daily necessities,tech electronics accessories. Front compartment with many pockets, pen pockets and key fob hook, make your items organized and easier to find Functional&Safe: A luggage strap allows travel laptop bag fit on luggage/suitcase, slide over the luggage upright handle tube for easier carrying. External pockets on both sides are made of elasticized fabric, expands to secure various size water bottles and compact umbrella 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. Please noted that this backpack doesn't power itself, usb charging port only offers an easy access to charge Durable Material & Solid:Made from DURABLE nylon fabric with Two "S" curve PADDED shoulder straps,offers LIGHT-WEIGHT Carrying and of force reinforcement,perfects for business traveling, weekend getaways, shopping, professional office work and other outdoor activities. Also, a perfect college backpack