Lightwave Lightning guylines - are lightest guylines. Set of 4 guylines weighs less than a single standard 3-mm nylon guyline! Lightning guylines consist of a Dyneema core wrapped in a polyester sheath, which combine to give a total diameter of 1.5 mm and a breaking strain of 70 kg. Each line comes with a mini-Linelok cleat for easy adjustment. These are standard issue with our hyper and ultra tent ranges.