The Prisma is much more than a mask; it is a reliable companion for exploring the underwater world in full clarity. The Prisma is equipped with the Cressi patented FOG-STOP system, which drastically reduces fogging through the internal thermoregulation of the warm, damp air exiting the nose. The external part of the skirt additionally features a cooling system made of soft heat exchangers that act as radiators. This effect drops the temperature inside the mask, bringing it closer to the external temperature, and traps the droplets of humidity before the air reaches the lenses, preventing fogging. What makes the Prisma additionally unique is its ease of adjustment: The micro-adjustment buckle is connected to a soft connection point at the frame, making it easy and smooth to adjust the strap tension without any skirt deformation, which often causes water ingress. Thanks to the combination of two different frame materials and Cressi&&';;s innovative patented soft skirt construction, the mask folds easily to fit in your BCD or cargo pocket. The Prisma offers the possibility to fit optical lenses for both negative and positive correction, allowing anyone to fully enjoy the wonders of the underwater world without compromising vision. Designed with the patented FOG-STOP system Can fit optical lenses, both for negative and positive correction Silicone skirt to ensure a perfect fit and watertight seal Easy adjustable buckles Available with UV 420-coated lenses