The Black Diamond Simple Single Fly is a minimalist rain cover for your Single Portaledge thats ideal for just in case weather protection on your next solo wall. This 5lb 1oz fly is made with lightweight 210D micro rip-stop nylon. There are no doors, windows, or overkill material to add weight. The Simple Single Fly stays rolled up at your ledges anchor point when its bluebird outside, and you just roll it down when storm clouds appear on the horizon. A single pole increases interior space, so you have more room to drink wallgaritas.