Doramile Direct via Amazon offers its Doramile Hiking Backpack in Black for $19.99. Coupon code "505D3FP7" cuts that to $9.99. With free shipping for Prime members, that's $10 off and the lowest price we could find. It measures about 21" x 13" x 9" and features a tear-resistant and water-repellent exterior. It folds into zipped inner pocket. Deal ends August 30.