The neoprene core allows the rope to float atop the water for better visibility and less chance for hang-ups on unseen objects that may be in the water. In addition, the can be easily seen with a reflective fleck in the rope weave. The 4k Tube Rope is a 60 foot long rope designed for 3 or 4 rider tubes or 4,100 pounds of average tensile strength. It has a maximum of 4 people or roughly 680 rider pounds and is a great lightweight rope for small tubes and tubers.FEATURESReflective Rope FleckVelcro Rope KeeperFloating Neoprene CoreWSIA Approved1 Y