Rooted in stature, with compliments of finely polished lines, the Solid State is your take on today's simple square frame lens. Constructed of lightweight swiss grilamid, this frame is exceptionally durable yet wildly comfortable, making it an ideal piece to compliment your daily get up. 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. 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 intraocular melanoma and macular degeneration, as well as reducing eye fatigue and reducing the visible signs of ageing, while maintaing 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. TR90 GRILAMID FRAMES High performance and low weight ratio. TR90’s 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. 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 100% corrosion resistance.