Paired with C4 Meltemi Snorkel Description Who hasn’t faced the frustration of a fogged-up mask, obstructing their underwater vision? Fogging in silicone-faced masks is one of the most common problems for users, whether they are freedivers, spearfishers, snorkelers, or scuba divers. In recent years, the problem has worsened with the introduction of modern “frameless” masks, which bring the lenses and face closer together. Despite the use of numerous remedies—ranging from chemical products like degreasers and antifog solutions to DIY methods like burning the lenses or cleaning them with detergents or toothpaste—none have provided a permanent solution. C4’s Revolution: Anti-Fog Masks C4 has finally resolved this issue by introducing a selection of masks equipped with special films applied to the inside of the lenses. These films effectively prevent fogging in any situation, provided a few simple usage guidelines are followed: No pre-treatment required:The mask does not need any prior preparation before first use (like the methods mentioned above). Simply rinse it with water before wearing it, avoiding contact with the inside of the lenses. Recommended maintenance:After each dive, rinse the lenses with fresh water and dry them with a clean cloth to maintain the film’s effectiveness. These innovative masks have been successfully tested by C4 ambassadors over the past nine months, both in the pool and at sea, proving their reliability in diverse conditions. Thanks to this innovation, C4 offers a practical and effective solution, ensuring perfect underwater vision without compromise. Among its main strengths are: an exceptionally wide field of vision; a very low internal volume; a self-adapting soft silicone skirt for any face shape and lenses with special anti-fog films. Specifications ANTIFOG technology. FRAMELESS technology. Self-adapting Extremely reduced Volume/Visibility ratio. Preformed nose with variable hardness for quick and easy compensation. MPS (Morphological Pivoting System) inclined strap attachment for a better seal. Tempered glass Anti-reflective soft hypoallergenic silicone skirt Internal opacity Anti-entanglement rear strap with snorkel holder Micrometric adjustment buckle Hydrodynamic profile Care Instructions Preventing Lens Contamination To maintain the antifog effectiveness: Avoid contact with greasy or oily substances (such as sunscreen, cosmetic or protective oils). Never touch the inner lenses with dirty or dry fingers. Be aware that pool water may leave marks or residues due to dissolved chemicals. Managing Temperature Differences Temperature differences between the inside and outside of the mask can cause condensation. To minimize this effect, wet both your face and the mask before use to equalize the temperature. Common situations where fogging may occur: Warm pool water in very humid environments. Sea dives with warm air and cooler water. Cleaning the Inner Lenses Clean the inner lenses before each use. If maintenance is regular and the dirt is minimal, a rinse with fresh water is sufficient. For persistent dirt, perform a preliminary cleaning using: A non-greasy, mild detergent diluted in fresh water (e.g., dish soap — see tutorial video), or A specific cleaning product for masks, such as Absolute Cleaner or Extreme Antifog. The use of other antifog products may be effective, but is not tested nor guaranteed. Alternatively, or in addition, you may use the traditional saliva method: apply a small amount of saliva to the lenses, then rinse thoroughly just before diving.