American Shield 50L Men/women Climbing Backpack Outdoor Travel Backpack Laptop Tablet Macbook Notebook Computer Ipad Iphone Best Girls Boys UNISEX.QUMI2101-1 External dual pockets feature elasticized mesh, which expands to secure various size water bottles. Plenty of pockets to organize whatever you need to carry. Unique quick recognition window design accommodates most 12-14 inch laptops notebooks. Airflow Back System: Multi-panel airflow design provides extra padding for comfort and maximum back support. Specially shoulder straps are ergonomically designed with added padding for comfort and control.