"http://www.amazon.com/gp/product/B001UDIFB2?tag=httphealth009-20
Approved for the Serengeti custom RX program
Versatile brown lens the lens performs under cloudy and harsh light conditions
dded protection of the Serengeti polarizing technology
18 transmittance lightened lens10 transmittance darkened lens
Serengeti Aviator Velocity Sunglasses Shiny Silver with D Polarized Lens"