Mares Loop 2nd Stage RegulatorLoop 2nd Stage Regulator The Loop second stage has been designed and engineered in a way which allows the hose to be passed under the shoulder. This configuration means it can also be used with the hose coming from the left. Under the shoulder use reduces the risk of it getting caught during a dive and also reduces hose vibration when moving through the water. The new integrated S VAD (Sagittal VAD) system combined with the special profile of the