When the sun shines at the sear or any other reflective or partially reflective surface, the reflected light becomes polarized.  This means that most but not all the light waves move in one plane.  Polarized lenses allow only light in one plane to pass through the lens.  Therefore, by using Polarized Safety Glasses while lounging at the beach, you can eliminate much of the glare from the sea.  Also, when you’re driving along the coast when the sun is going down, the sun’s blinding light naturally bounces onto your windshield and at times completely blocks your vision from the cars in front of you.  This could potentially cause you an accident.  Although most sunglasses do aid in blocking out some reflective glare, they do not reduce as much reflective glare as do Polarized Safety Glasses.  More ...