The Serengetireg Classics is a timeless collection that offers understated beauty that seems to fit perfectly in any situation from a casual drive down a country road to a high powered meeting in the middle of downtown. 555nm Lens Ideal for bright light conditions, the 555nm lens manages yellow and green light transmissions to cool and relax the eyes. The light silver mirror coating further reduces eyestrain by acting as a protective shield against glare. Base Curve 6 Rx Temple Length 139mm Lens Size 65 x 55 x 68mm, DBL 12mm Frame Shiny Gunmetal Lens 555nm Polarized