When your training plan calls for long enduro sessions at the gym that push you to the edge of your fitness, you want a rope that stands up to the wear--the Gym Classic Climbing Rope from Mammut does just that. The yarns of the sheath construction are incorporated to help protect your rope from abrasions while giving the rope a smooth overall texture for comfier clips or longer belays. With a 9. 5mm diameter, the Gym Classic is hearty enough to withstand whippers and short-falls alike so you can save your 60m for your project at the crag.