You've surely heard of protecting yourself from harsh UV rays, but the sun doesn't need to be shining bright. UV rays also reflect off sand, water & buildings on overcast days. And little do we realize it but exposure to harmful UV rays can cause cataract, macular degeneration, corneal sunburn, and early aging of the delicate skin around the eyes. Brown color shade on the lens makes your face look extra cute and smart. It's a luxury fashion.