Safety-rated ANSI compliance, durable frames and anti-fog technology in a stylish and affordable package? That's the Vapor Shield Dawson. These anti-fog safety glasses offer protection from fogging in hot, cold and humid environments. Our Vapor Shield anti-fog technology is baked into the front and back of the lenses during manufacturing to ensure a long-lasting solution to inhibit the buildup of fog-causing water vapor. Available in clear and smoke lenses for clear vision in indoor or outdoor environments, these fog-proof safety glasses were designed to perform.