OTIS Eyewear After Dark X Polar Mineral Glass Sunglasses

Origin: Made in the USA or Imported6 BASE LENS CURVE- Lens Base Curve is a measure of the front curvature of the lens. The higher the number, the greater the curve. 6 base lenses are generally flatter across the front. 8 base lenses have a greater curve for a more wrapped look.TR90 GRILAMID FRAMES- High performance and low weight ratio. TR90s high-performance property profile and process ability makes it an ideal optical engineering plastic. The transparency, rigidity and impact strength of Grilamid compare favorably to other transparent polymers like polycarbonate. It is the lightest engineering plastic in existence, maximizing wearer comfort.MINERAL GLASS- Mineral Glass is created from natural elements like sand and soda ash. Its endlessly recyclable and harmless to humans and animals alike. Its high resistance to scratching and lack of distortion make it the worlds best lens material. It really does have to be Mineral Glass.100% UVA/UVB PROTECTION- All OTIS fixed-tint lenses block 100% of harmful UVA, UVB and HEV light to provide superior protection from solar damage causing intra-ocular melanoma and macular degeneration, as well as reducing eye fatigue and reducing the visible signs of aging, while maintaining true color and depth perception.Includes deluxe case, box, and lens cloth. superb for everyday use. superior materials and excellent craftsmanship ensure long-lasting durability.