A tough all-around workhorse, the Petzl Zephyr Climbing Rope is great for people just getting into climbing, or for those who want increased longevity. The extra durability and high fall-rate safety feature of the traditional 10.3 mm diameter makes it ideal for demanding days on a sport rock or big wall free climbing. The diameter also adds additional friction control in belay/rappel devices when desired. Featuring a dry coating to reduce water absorption and increase durability, this everyday line is tough enough to tie-in on any challenging route.