Climbers and mountaineers who use it often return to buy more, which explains why the Mammut Flash is the most popular choice in the Swiss-made Mammut climbing rope collection. This 60 meter version has a 10.5 mm diameter and a special dry treatment that minimizes water absorption. It's an ideal choice for mountaineering, outdoor climbing and gym wall work. Recommended for single rope climbing, mountaineering and indoor wall use. Specs: Diameter: 10.5 mm Treatment: Superdy Fall Rating: 10 Elongation: 6.0% Weight: 4.4 kg