Polypropylene Rope
Because it is extremely lightweight, polypropylene rope is the only type of rope that floats. Due to this fact, it is commonly used for pool markers and water sports. Polypropylene rope is available in monofilament fiber, which is smooth-surfaced, or multifilament fiber, which has a somewhat velvety appearance and feel. Polypropylene rope is also the most popular all-purpose rope for the average consumer because it is the least costly.
While polypropylene rope is rot-proof and unaffected by water, oil, gasoline, and most chemicals, it is the rope most affected by sunlight deterioration. At 150°F, polypropylene rope has the lowest melting point of all synthetic ropes. It is not as strong as nylon or polyester, but still two to three times stronger than manila. Overall, polypropylene rope is an excellent all-purpose utility rope.