Cressi Quantum MaskQuantum Mask The major innovation with the Quantum mask is that as well as offering enhanced downwards vision it avoids the fogging phenomenon through the internal thermoregulation of the warm, damp air exiting the nose. This air is channeled by a system of membranes set in the molding around the eyes and nose and deviating the flow towards the silicone skirt rather than the lenses. The external part of the skirt features a cooling system composed of