The Mushroom Bag contours your tubes and creates a way to use the space on the top of your tubes as well as the area on your floor. This design more than doubles the storage in the stern of your boat. It is a great solution for small boats that don’t have a lot of room and are a great option for outfitters needing to maximize there loads. Loose the straps and secure your gear fast. This product embodies our theory of Simplify Your Rigging . It includes all the rigging straps and a compression mechanism I call “The Closure Device” as seen in the Product Image.