Vectran rope is made from a liquid crystal polymer (LPC) , which, weight for weight, is 4 times stronger than polyester. It has zero “creep”. Meaning that it doesn’t elongate under constant load. Unfortunately its UV resistance isn’t good. It is for this reason that Vetran ropes almost always come with a polyester cover that not only protect the rope form UV but also from abrasion. It is not recommended to remove the polyester cover from vectran.