30 Liters Travel Laptop Backpack with USB Charging Port includes the following features : 

• One separate laptop compartment hold 15.6", 15", 14" and 13" laptop and tablet
• One spacious packing compartment roomy for daily necessities, tech electronics accessories
• Front compartment with many pockets, pen pockets and key fob hook, makes your item organized and easier to find
• With a hidden anti theft pocket on the back protect your valuable items from thieves
• Comfortable soft padded back design with thick but soft multi-panel ventilated padding, gives you maximum back support
• Adjustable shoulder straps relieve the stress of shoulder
• Foam padded top handle for the long time carry on using
• A luggage strap allows backpack fit on suitcase, slide over the suitcase upright handle tube for easier carrying
• With built in USB charger outside and built in charging cable inside, 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
• Made of water resistant and sturdy polyester fabric with metal zippers
• Serve you well as office work bag, USB charging backpack, school backpacks

Material :

• Polyester fabric

Size closed :

• Capacity of 30 liters
• Length of 12" x Width of 7.8" x Height of 18"
• Weight of 708 grams