Love this simple Waxed Canvas Field Bag from 1820 Bag Co.
Made with military / moss green duck canvas, the canvas is handwaxed using their own wax formula - making it water resistant. The bag is lined and has a pocket under the flap, two back outer pockets and a zippered pocket and three slip pockets inside. Roomy enough to carry a tablet/iPad and a few other items. It's perfect, if you are not looking for a full size Messenger Bag. The Waxed Canvas Field Bag can be found HERE