Come and see our amazing products. Durable Oxford Spinning 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. lease noted that this backpack doesn't power itself, usb charging port only offers an easy access to charge. It is prefect for office work bag, slim USB charging backpack, colleage high school big student backpack for boys, girs, teens, adults.More than 500 piece is shipped by Ocean. Pls confirm further with us if any query about packing info, inventory status and time schedule.