Bag dimension: 11 x 7.8 x 15.7 inch (LxWxH), Volume 22L. Durable Nylon material, Water-repellent. Look stylish and attractive, not be too bulky but roomy for everything you need, a good choice for daily commute, business travel, college rucksack bookbag, laptop backpack purse, carry-on bag etc. USB Charging Port -- Built-in USB port design allows you conveniently to charge cell phone by connecting power bank without opening backpack on the go.(Power bank is not included) Wide Open Design -- This backpack has a frame to hold it's large, rectangular opening providing easy access to the items at the bottom. No more digging. It can be wide-open 7.8”in width. Large Capacity -- Roomy main zipper pocket with dedicated laptop compartment for screen sizes up to 15.6 inches, tablet pocket for iPad 10.5”, A4 books,folders.Two inner pockets, pen slots and exterior zip pocket provide storage for small items such as cards, keys etc. Dual side pockets for water bottle or quick phone stash while going through TSA or using the charging port. And a zip pocket on back for your valuables. Carry in Comfort -- Adjustable padded wide shoulder strap, release your pressure on back and shoulder. Top Handle Drop 3 inch allows you to carry it on your elbow (NOT SHOULDER) like a tote. A well-knit luggage belt is quite convenient for you to fix the backpack on the trolley of your luggage, making your journey more convenient wherever you go.