Guardian Heritage Elite Canvas and Leather Cartridge Bag The Guardian Heritage Shotgun case Collection is made in a classic design that combines a heavyweight waterproof laminated fabric with quality Leather. This results in a product that will be relied upon for generations. The Guardian Heritage Elite Canvas and Leather Cartridge Bag is designed to the same specifications of the standard Guardian Heritage Canvas Cartridge Bag with the addition of an attractive full quality leather flap. This further compliments the shoulder strap and brass style fastenings.