Every once in a while, a revolutionary innovation comes along that really makes a difference in how you see things. Radians new IQuity™ Anti-Fog Coating is a breakthrough technology that provides one of the most superior and long-lasting anti-fog coatings in the marketplace at a competitive price. It is both EN166K and N compliant.? The water-based coating lasts much longer because the anti-fog and anti-scratch properties are built into the lens for long-term wear and durability.? Radians Obliterator™ IQ foam lined safety eyewear comes with a removable foam lining and adjustable headstrap.