Trango's Lotus 9. 9mm Climbing Rope is tough in the gym and light at the crag. With a 9. 9mm diameter, the Lotus is a great introduction to skinnier ropes, and it has a long-lasting performance when you're projecting and falling over and over. Expect excellent handling at the belay and reliable durability during the climb. Trango treated the sheath to resist water and abrasion, and there's a distinct middle marker for quick rappels.