SevenFriday Sunglasses Insane Sunset INS2B/01. Frame: Crystal gradient from golden brown to purple-blue Italian acetate, duo-finishing polished and matte sandblasted • Two Polished 3N golden stainless-steel TV-shaped signature. Temple: 155 mm • Stainless steel electrical transmission tower with 3N golden soft sandblasted finishing • Temple tips in Crystal gradient from golden brown to purple blue Italian acetate • 7F icon logo on the inside on both temples.  Lenses: CR39 Flash Lagoon blue, anti-reflective coating on the inside • Category 3 • 100% UVA/UVB protective lenses. Features: Frame in connection with the SEVENFRIDAY App, thanks to a NFC chip embedded in the left side temple tip, allowing secured authentication and registration.  Packaging: Packaged in a collapsible natural cork box with red cleaning cloth.