The Tidal Mask is NEW to the market! The ProShot team has been developing this anti-fog technology for the past few years. We manufacture with the highest quality silicon and tempered glass possible to ensure longevity and durability. The inside of the Tidal Mask comes treated with a proprietary hydrophilic technology which prevents fogging in any circumstance! Enjoy FOG-FREE snorkeling and scuba diving without the need for anti-fog solution, spit, or burning your mask. The anti-fog treatment will last for hundreds of dives and is also replaceable if wears off after heavy consistent use. Our team of product testers have been raving about mask and anti-fog capabilities! *30 Day Money Back Guarantee. Must be in original packaging and customer responsible for return shipping* *International buyers are responsible for clearing their local customs and paying local customs duties