The DYNALOOP sling is an essential piece of gear for mountaineering and big wall climbing. It can be used for clipping in, equalizing a belay or extending an anchor point. The rope has an advantage over conventional webbing in that the sheath protects the rope's core from UV and friction. The seams are protected by a heat-shrinkable sheath. These are two features that make the DYNALOOP more secure and durable than normal webbing.