The Rope & Float Kit includes quality rope made for swimming pools and line floats. These line floats are made of a unbreakable polyethylene and are sealed for optimal buoyancy. This rope float is highly visible and treated with chlorine inhibitors and ultraviolet stabilizers so they will not fade or break over time. The Rope Float Kit is available in 16 feet, 18 feet, 20 feet & 24 feet. The sizes listed are the width of the pool that the rope will need to fit. There is slack built into each safety rope line kit.