Polyester (PE)
Polyester is very close to nylon in strength when a steady force is applied. However, unlike nylon, polyester stretches very little and therefore cannot absorb shock loads as well. It is as equally resistant as nylon to moisture and chemicals, but is superior in resistance to abrasion and sunlight. Polyester is the most popular general purpose rope in the boating industry.

Polypropylene (PP)
Because of its light weight, polypropylene is the only rope which floats. For this reason, it is very popular for pool markers and water sports. PP is affected by sunlight deterioration, more so than any other synthetic or natural fiber rope, but its life can be extended by storing it away from direct sunlight. PP begins to weaken and melt at 150°F, the lowest melting point of all synthetic ropes. It is not as strong as nylon or polyester. It is the most popular all-purpose rope for the average consumer.

Braided Rope
Three general categories of braided construction exist: diamond braid with a core, diamond braid without a core (called hollow braid) and solid braid. Diamond braid is manufactured by weaving ends of yarn over and under. If there is a core around which the rope is braided it cannot be spliced. If no core exists, the rope is called "hollow braid". The outstanding feature of hollow braided rope is the ability to splice it. Solid braid is very firm, round and tightly woven with a special lock-stitch construction which prevents unraveling when cut or torn. Solid braided rope stands up especially well to chafing of blocks and pulleys.