PETZL - Mambo Wall 10.1, Single Rope for Indoor Climbing FOR GYM USE: Specific lengths and easier handling makes MAMBO WALL perfect for the gym. FULLY EQUIPPED: Great durability for lead and top-rope climbing and low static and dynamic elongation. EASE OF USE: Handling characteristics provide good control during the learning phases. MORE EFFECTIVE BELAYING: Middle Mark indicates the middle of the rope to facilitate maneuvers. INCREASED STABILITY: EverFlex is special thermal treatment that stabilizes the core strands and improves consistency; offers excellent grip and consistent handling over time.