Blue Water certified its Xenon Double Dry Climbing Rope as a single, half, or twin for enhanced versatility in the vertical world. It looks at home whether you're climbing big wall, multi-pitches, or a challenging sport climb. A 9. 2mm diameter sits on the skinnier side of climbing ropes, and as such this rope should only be handled by experienced belayers. This version features Blue Water's Double Dry treatment, which coats both core and sheath to practically eliminate water absorption and increase abrasion-resistance.