Hanxiema Large Capacity Business Travel Laptop Backpack With USB Charging Port Waterproof Bag for Women and Men Fits Under 15.6 Laptop/MacBook, Durable 900 D Oxford Cloth(gray HXm-06-1)

Bought this for my 14 year old son 8th grader who carries all his heavy school books around. It's very stylish and holds its shape. It has held up well so far (considering my son carries heavy books with it), and it can fit plenty of full size books. The chest strap is an added bonus.