Despite your best intentions to get a little homework done over the weekend, your Dakine Shelby 12L Backpack went unopened, but at least it will be loaded and ready to when you're late to class Monday morning. Specs: 730 cu. in. [ 12L ], 14 x 10.5 x 5'' [ 36 x 27 x 13cm ]. Material: Polyester.