 | Ray-Ban Warren Bio-based Sunglasses Transparent Green Frame Brown Lenses 57-20. Ray-Ban Warren Bio-based RB4396F Sunglasses are a timeless classic. The frames made with bio-acetate having 67% bio-based carbon content boast a transparent green hue, while the lenses are brown, making these shades a great choice for men wanting to look polished and contemporary.... - Ray-Ban Warren Bio-based Sunglasses Transparent Green Frame Brown Lenses 57-20. |