Thanks to the collaboration with a leading Italian orthodontia study, Mares created the best hypoallergenic silicone mouthpiece characterized by unparalleled easy breathing and especially well-suited to prolonged use. Diameters and lengths are optimized, avoiding any air turbulence and making clearing easier. Anatomic and hydrodynamic shape: the D-section tube eliminates discomfort in the area that touches the temple. In the Dual version, the tube is made in two materials with two different softness levels to decrease vibrations and noise when moving about during the dive, increasing comfort without causing interruptions in air flow.