Dakine Backpack Factor 22L distortion 2017/18 Dakine Factor Backpack is a backpack ideal for school or travel. There is one small zippered pocket at the front, a second pocket with organizer and a smaller pocket for small items, a fleece pocket for storage at the top, a central pocket for two-way zipper, an internally reinforced notebook compartment. Reinforced shoulder straps and back panel for added comfort, height