Materials: Outer fabric 1000d cordura, world-renowned for its lightness and strength, ykk zips,UTX buckles,nylon webbing,420D nylon lining.Multiple carry handles for versatile using,pack can be carried on one shoulder or two shoulders, also can be used as handbag or cross body sling bag,Meet all of your daily needs, such as going to school, business office, outdoor leisure,tactical gear.Computer compartment, can put 17 inch computer, the interlayer is soft material,Padded internal sleeve for secure laptop storage.The main warehouse can store clothes, auxiliary warehouse can store information, books, there is a capacity expansion layer, zipper clever design, open, you can load a lot of things, close, you can reduce the volume of bags.The interlayer partition function, Zippered compartment with organizational pockets for pens Front keys, phone cell ,office supplies, school books, tactical accessories, outdoor survival essentials, pistol other items andMolle webbing throughout front pouches and attachments.Designed magic VELCRO on the front,available for identifier and patches,convenient to assembly and remove.Adjustable shoulder straps and waist force adjusting belt, hidden design“The quick drop "system for the quick release of the bag.Behind the backpack is a comfortable breathable material that complies with the human body and air flow