'The new Loopoct Opus amazed by Mares, especially with its compact and Leichtengröße. All Mares second steps are fitted with the unique, our patented VAD system. The Air by the bypass tube to mouthpiece Silicon, so one swivel (engl.: "Vortex), in the centre there is under pressure. This pulls the membrane during the breathing, meaning the diving regulator of anspricht and the on all deep breathing easier. Thanks to the VAD Mares Regulator in contrast to previous controls don't need adjustment in the second step - no matter how deep you diving.