From Otis

Take a trip to a bold frame of mind – Odyssey lets you step out with confidence. The Eco-Grilamid frames are lightweight yet strong, with Viscottica hinges to keep that style together. Your striking companion for beach adventures and hiking wherever the day takes you.

• 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.
• 6 Base Lens Curve
• Sizing: 54 – 17 – 137 (mm)
• 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.
• 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