Julbo Cortina Vintage Sunglasses Spectron 3+ blocks 88% of visible light, Lite-weight shock resistance, Flash treatment improves visible light filtering, mirror effect on lenses The flash treatment improves visible light filtering with a mirror effect on the lenses; All Julbo lenses are optical category 1 100 % A,B,C UV Protection A percentage if their profits given to the vision charity Eyes for the World Protective Case included