Made of oxford cloth 900D, fits 15.6 Inch laptop, external USB charger, internal built-in charging cable. Back side filled padded, and with a belt fit for luggage case. It is not just a laptop bag, it can also be a Messenger Bag, a hand Bag or a computer backpack, an ideal design for work, business travel or daily travel. Bag capacity can enlarge, depth from 5.1″ to 13″.