This product comes in a wide variety of sizes and different materials. The Flat styled bag does not have a gusset or pleat down the side of the bag, while the Satchel or Wedge style does. It all depends on what the bag is used for. There are many different applications for both styles such as Bread, Postage Stamps, Seeds, and Fast Food to name only a few. Availability of this product is subject to specific size, quantity and materials required.