The Euro's know a thing or two about climbing, and the Mammut 8.5 Genesis Climbing Rope is a long-time best seller, and one of the most durable half ropes in Europe. So it will probably work for you, if you're into alpine climbing or multi-pitch rock, ice or mixed routes. Two ropes are most often used when the potential for excessive zig-zagging (a distinct possibility during alpine route finding) can create dreaded and dangerous rope drag. Like all Mammut ropes, the 8.5 Genesis is made from Polyamide 6 (Nylon) filament yarn, and sports the COATINGfinish™ treatment, in which the individual rope strands are PTFE coated in order to minimize chafing and improve friction co-efficiency. The result is a more uniform distribution of loads among each individual filament, allowing for lighter ropes that can hold the same number of falls. When you want a time-tested half rope, tie into the 8.5 Genesis Climbing Rope from Mammut.