The FIJI mask is a sea mask equipped with the advanced Cressi Fog Stop system. A membrane system directs air to the bottom of the mask, away from the lenses. A second membrane seals the eye socket, so the warm air from exhalation does not come into contact with the glass at all. This drastically limits the fogging of the mask. Another feature of the Fog Stop system is the thermal exchange structure at the top of the mask's silicone strips, which facilitates heat exchange between the mask and the water, balancing the temperature of both in a shorter amount of time.

The FIJI was designed for snorkeling. It features an elastic band, making it easy to use, ideal for beginners and people with long hair. It can also be used for diving, but it should be remembered that an elastic band is not as stable as a silicone one. The lenses have not been chemically treated, and it is recommended to clean them thoroughly with a strong soap (toothpaste, dish soap, degreaser) when the mask is new. Additionally, it is necessary to perform the regular anti-fog procedure before using the mask, with anti-fog spray or saliva on the dry glass surface.