Description The most interesting mineral based eco-friendly sunglasses straight from the beaches of Australia. Introducing the Omar X, an evolution of our best selling Omar frame. Omar X features the same unique styling as Omar, with a slightly larger silhouette. With Omar X, we've taken inspiration from retro designs of the past and mingled them with our unique OTIS flair to create a round frame constructed from handmade acetate. Omar X features a key hole nose bridge and sophisticated temple detailing. The perfect everyday frame to transform your look. Features 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. Lens 'Base Curve' is a measure of the front curvature of the lens. The higher the number, the greater the curve. Sizing: 52 - 23 - 140 (mm). For more sizing information see our Frame Dimension Guide. 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 aging, while maintaining true color and depth perception. Made with premium quality acetate (originating from renewable resources wood pulp & cotton fibre), the ideal material for making durable eyewear. 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. 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.