The Harmony 3D End Float Bags are‚ designed for use in tandem canoes‚ without built-in end tanks. These float bags‚ feature‚ an 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. There is also a twist valve on the inflation hose and a high-capacity dump valve. ‚ Tie-in points at the nose and base for ease of securing Tie-ins are isolated from the air holding cell so that a tear out will be limited to the anchor Twist valve on the inflation hose ensures a positive seal and a high capacity dump valve for easy deflation 30" Bag - Part # 8023184 Length: 28" / 0.71‚ m Width: 33" / 83.8‚ cm Weight:‚ 20‚ oz / 567 g 48" Bag - Part #‚ 8023186 Length: 48" / 1.09‚ m Width: 31" / 78.7‚ cm Weight:‚ 32‚ oz / 907‚ g 54" Bag - Part #‚ 8023188 Length: 48" / 1.22 m Width: 30" / 76.2 cm Weight:‚ 33‚ oz / 936 g 60" Bag - Part 8023190 Length: 53" / 1.35 m Width: 35" / 88.9‚ cm Weight:‚ 42‚ oz / 1191 g