The sheath of the single rope is made from residual yarn left over from changes between different colors. Previously disposed of, this yarn is a high-quality, brand-new raw material. They are perfect examples of responsible use of resources and each rope is also a one-off, featuring its own individual pattern. bluesign PRODUCTA bluesign PRODUCT is made with at least 90% / 30% bluesign APPROVED materials / accessories. The designation guarantees the highest level of consumer assurance, responsible use of resources and minimum impact on humans and the environment. Mammut Classic ropes are PFC-free, untreated all-purpose ropes that offer great performance in the climbing gym or while scaling an actual rock face out in good weather. They are often a particularly good choice for beginners.