The Fly Hive Storage System is comprised of two major parts - a set of heavy-gauge vinyl bags and a padded carrying case. The heavy-duty gusseted bags are see-through and have a Velcro closure that runs its entire length. Each one has a plastic stabilizer about 1/8 inch thick that keeps it standing vertically like a file folder. When the bag is closed tightly, pressure holds its contents firmly in place. Tiers can use them to store a variety of materials on both sides of the stabilizer. The Fly Hive is also a good place to keep your fly boxes, lines, reels and other gear.