OTIS Test Of Time Sunglasses Matte Amber Tort/Brown Polar 53-18-140. We've taken inspiration from the iconic Glasses worn by stars of the 70's to create this simple yet staunch design to give you clean vintage vibes. Test of Time is now available in our exclusive Eco-Acetate frame a 100percent recyclable and 100percent biodegradable acetate frame made from wood pulp and cotton fiber. Specifications for OTIS Test Of Time Sunglasses: Manufacturer: OTIS Application: Outdoor Size: One Size Temple Length: 140 mm Age Group: Adults Gender: Unisex Frame Color: Matte Amber Tort Lens Color: Brown Polarized: Yes Frame Material: Acetate Lens Material: Mineral Glass Lens Diameter: 53 mm Distance Between Lenses: 18 mm Features of OTIS Test Of Time Sunglasses MINERAL GLASS: Mineral Glass is created from natural elements like sand and soda ash. It's endlessly recyclable and harmless to humans and animals alike. It's high resistance to scratching and lack of distortion make it the world's best lens material. It really does have to be Mineral Glass. 100percent UVA/UVB PROTECTION: All OTIS fixed-tint lenses block 100percent of harmful UVA UVB and HEV light to provide superior protection from solar damage causing intraocular melanoma and macular degeneration as well as reducing eye fatigue and reducing the visible signs of aging while maintaining true color and depth perception. 6 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. Sizing: 51.5 - 19.5 - 140 (mm). For more sizing information see our Frame Dimension Guide. HANDMADE ACETATE FRAMES: Made with premium quality acetate (originating from renewable resources wood pulp & cotton fibre) the ideal material for making durable Glasses. Its hue is embedded within the product rather than sprayed onto the surface retaining colour brightness and preventing peeling & fading. OTIS handmade frames have stainless steel wires injected into the temples for adjustability - a task best performed by an Eye Care Professional. VISSOTTICA HINGES WITH STAINLESS STEEL SCREWS: OTIS frames are produced with high quality 3 5 and 7 barrel hinges. These premium grade Vissottica brand hinges are extremely durable and boast 100percent corrosion resistance. Package Contents: Otis Test Of Time Sunglasses Sunglass Case Cleaning Cloth OTIS 92-1702P: Test Of Time Sunglasses Matte Amber Tort/Brown Polar 53-18-140 OTIS 92-1702P: Test Of Time Sunglasses Matte Amber Tort/Brown Polar 53-18-140