The Cressi Calibro Mirrored Mask is a clever low volume mask with a unique anti-fog skirt that isolates your nose creating a seal around the nose that helps reduce the chance of fogging lenses. The low internal volume makes the Calibro perfect for both freedivers and scuba divers as you don't have to equalise as much when you descend or clear as much if flooded. Mirrored lenses protect your eyes from glare and the sun, especially when you're on the surface by reflecting certain wavelengths of light that can be harmful to your eyes.