The Harmony 30 inch 3D End Float Bag in vinyl is designed for use in tandem canoes WITHOUT built-in end tanks. It features the innovative 3D vertical end seam along with tie-in points at the nose and three across the base of the bag, all of which are isolated from the air holding cell so that a tear out (a rare occasion at best) will be limited to the anchor. Also features a twist valve on the inflation hose and a high-capacity dump valve. The listed dimensions for the Harmony 30 inch 3D End Float Bag are for when the bag is inflated.