You know exactly what to carry in the Shell Bag. Yep. Shells. 125 loose shotgun shells, up to 12 gauge, or three 25-count boxes. The case is built with canvas, 100 percent full-grain leather and poly inserts for rigidity, making it a tough compadre that doesn't mind being dropped, tossed or drooled on by a sleepy setter. The YKK brass zippered closures help ensure that the contents stay clean and dry in the worst conditions.