Aoneky Gym Climbing Rope with Clip, 30mm/40mm /50mm, 3-9M, Jute Battle Rope for Training, Fitness, Strengthen Muscle Power Inddor OutdoorHemp Material Natural hemp fibers, this wear resistant climbing rope has a soft touch and is easy to knot, providing a comfortable grip that won't hurt your hands. Wide Range Choices Diameter: 30mm, 40mm, 50mm, Length: 3m 4m 4,5m 5,5m 6m 7,7m 9m. The unstable nature of climbing a rope forces you to stabilize your climb which works out your back, legs and core. Durable 10cm heat shrink end caps prevent fraying, they help keep the shape of the rope