American Shield computer notebook Laptop Daypack Backpack.ASBZ1630-C6 Shoulder Strap System: Specially shoulder straps are ergonomically designed with added padding.Different production batch item Code may different. Unique quick recognition window design accommodates most 12-17 inch laptops. Organizer Pocket: Interior organizer provides divider pockets for pens, pencils, cell phone and CD's. Plenty of pockets to organize whatever you need to carry. Airflow Back System: Multi-panel airflow design provides extra padding for comfort and maximum back support. Water Bottle Pocket: External dual pockets feature elasticized mesh, which expands to secure various size water bottles.