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 Dagger™ IQ foam lined safety goggle has snap-in temples which allow interchanging from ratcheting and telescoping temples to adjustable head strap.