Conventional swimming goggles are problematic in that they have single-use anti-fog coatings. Rubbing the inside or contact with moisture will make the coating fall off, causing it to lose the anti-fogging function. Vinegar-and-detergent mixes or anti-fogging liquids are used to combat this, but these require waiting and are short-lived, making them imperfect solutions.
Ray Materials anti-fog coating with non-organic material that does not melt in water, producing super-hydrophilic properties and maintaining anti-fogging functionality for as long as the goggles remain usable. It is also free from surfactants and harmful substances, making it safe to use.