Sterling's HTP (High Tenacity Polyester) rope is made entirely of polyester and has several benefits over mixed fiber static ropes. HTP is a workhorse in hostile situations due to its inherent resistance to moisture, chemicals, and UV radiation. HTP ropes are an excellent choice for high-lines, tower rescue, rope access, water rescue, and other applications needing high strength and low stretch. The static rope has been in business since 1992. They've spent the last 25 years using creativity and a strong work ethic to create some of the highest-quality ropes and safety equipment in the climbing and safety industries.