Edelrid designed the Topaz 9. 2mm Climbing Rope to do just about anything, so you can feel comfortable taking it virtually any time you get vertical. It's certified as a twin, double, or single rope, which makes it suitable for tough sport climbs, wandering trad routes, and even occasional ice. The Topaz has a Dry Shield treatment to repel water and dirt, so it doesn't gather weight, gunk, or moisture. Edelrid also finished the sheath with its Pro and Thermo Shield treatments for silky smooth handling, so this lightweight cord is easy to clip, feed out, and knot.