PYRAMEX DUCKS UNLIMITED SHOOTING SAFETY GLASSES WITH 5 INTERCHANGEABLE LENS/CASE (2 PAIR PACK) Clear Lens = General purposes for indoor applications that require impact protection. Amber Lens = Commonly used in indoor, low light applications. Enhances contrast. Sun Block Bronze Lens = Blocks the blue light of the spectrum. Offers brighter view on cloudy, hazy or foggy days. Orange Lens = Offers high contrast and low light image resolution. Vermillion Lens = Vermillion has a muting effect on green to bluish backgrounds, and therefore is common for shooting sporting clays. Enhances contrast while reducing all color equally for optimum color recognition.