Our high-strength guylines good enough for five-season mountaineering. These are a 2mm diameter 100% Dyneema braid and have a breaking strain of 150kg. They are UV-resistant and absorb no moisture (so don`t freeze up). They come with a mini-Linelok adjuster. 300cm long, 9.5g each.
Strong and light! Could wax lyrical about how strong Dyneema is but you probably know that already.