SevenFriday Sunglasses Insane Carbonator INS3/01. Double Layer Frame: Layer 1: Stainless steel, industrial flooring tread pattern • Layer 2: Matte stainless steel frame, stainless-steel metal rings around the lenses with matte finishing. Blinders: Foldable & removable blinders with 2-sided genuine black leather, tone on tone stitching• Genuine black leather belts with black stitching hold the blinders in place. Temple: 141mm • Black stainless steel electrical transmission tower with matte finishing • Black acetate temple tips with matte finishing • 7F icon logo on the inside left temple. Lenses: CR39 lenses colored in warm green (G15) with blue anti-reflective coating on the inside • Category 3 • 100% UVA/UVB protective lenses. NFC Chip: 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.