Core & sheath strands treated with DuraTec dry treatment. Helps prevent the rope from absorbing waterDuraTech treatment also improves rope durability. Chemically bonds to nylon fibers, increasing abrasion resistance and preventing entry of dust and dirtButterfly coiled in the factory so ready to use straight out of the packageRope is marked 6 meters from each end to alert climbers that the rope end is approaching. Middle of each cord is marked as wellSPECS: Weight - 67 g/m. UIAA falls - 10. Impact force - 7.28kN. Elongation - 33.7% dynamic, 6% static. % Sheath by weight: 34%