Aidonger Travel Bag Carry on Bag Barrel Hiking Backpack (Black) Made of high density cotton canvas and zips. Freely adjustable shoulder strap buckle, you can adjust it according to your height and comfort requirements. Scientific and reasonable pocket lining design make your goods lay in the bag systematically. As a tote bag with handle on the top of the bag, as a shoulder bag with the shoulder strap. You can put A4 books, 15.6&#039;&#039; laptop, clothing, ipad, glasses, wallet, keys, cell phone, umbrella, document etc in the bag.