Waxed Fordham Convertible Bag Field Tan. Talk about convenience in the palm of your hand! The Waxed Fordham Convertible Bag is tailored to your everyday needs. Some will use it as a backpack, others as a great everyday carry-all. The water-resistant top zipper will keep your belonging dry and protected from the environments with large opening to the main compartment that will let you store things to your heart's content.