Not Yet Famous' sunglasses are made from fine acetate or metal (NEVER PLASTIC!!!) with 100%UV protection polarized lenses, so that you see the world in it’s true colors. Polarized lenses use horizontally aligned polarizing micro crystals that help reduce glare. Glare is caused when light from the sun is reflected off of water, snow, glass, pavements and cars. By neutralizing glare, polarized lenses make colours and images more vibrant, and your overall visual experience improve.The normal sun lenses only decrease the light intensity. They provide the kind of comfort that you know, and you are used to. But polarized lenses give you that extra something that can really make the difference.They all come with a beautiful felt case, again, made of sustainable materials.