High-moisture environments are not a problem with the Guardian Fall Protection Poly Steel Rope Vertical Lifeline Assembly. Made of poly steel, it is not affected by wet conditions, does not absorb water, and will not diminish in strength. This makes it a more dependable vertical lifeline as regular ropes made of nylon reduce in strength by between 10% and 15% when wet. Aside from withstanding moisture, this Guardian Fall Protection poly steel vertical lifeline resists damage from ultraviolet light as well as cuts and abrasions. This guarantees long-lasting use perfect for harsh working conditions. It is also 10x stronger than polypropylene, making it less likely to be replaced.The poly steel rope is 5/8 thick, and comes in different configurations. It features an 18-in extension lanyard, shock absorber, positioning device, and two double-locking snap hooks.