An elastic double sling system to avoid losing tools when climbing on rock or ice, solving the problem of modern climbing without a leash. The Double Spring is attached to the harness by looping it through the tape ring over the harness itself. The two ice axes are attached with 2 small carabiners to the holes on the spike (max 200kg). * Permits easy changeovers of hands and tools. * The two sections are so elastic that they don’t impede any movement and allow maximum arm extension when required. * Compact when required, long when required. Attention: the double spring must never be used as a self belay for the climber or to belay a companion. Its strength is limited to 200kg. The two small carabiners have a maximum resistance of 750kg and must never be used instead of normal carabiners when climbing or belaying - Makes it impossible to lose the ice axes - Leaves hands free - Long when required - Compact when required