The silicone takes care of the UV exposure. Don’t be fooled, these simple looking products incorporate an uncommon level of sophisticated design and construction detail to make them the best pitching and strongest available. Wilderness Equipment’s trade-mark tear-drop guy attachment is now years old. They devised it, not as a universal guy cord pouch but because simple triangular reinforcing patches build-in new weaknesses. There is hardly a trip that you shouldn’t take an Overhang along. They are so useful during stops en route and on wet lay days.