On frames
The model code is composed by the first 2 letters + 4 digits (e.g: RB3183) imprinted inside the left temple of a standard frame.
On the website
The model code is reported in any product detail page. It is composed by the first 2 letters + 4 digits (e.g: RB3183) of the code displayed in the image above.
If you see “BIO-BASED” in the name of your Ray-Ban, it means that:
Lenses are designed with bio-nylon containing 40% bio-based carbon content** (available only for classic sun lenses) and/or non metallic frames feature bio-based frames with 57% bio-based carbon content**.
** tested according to ASTM D6866 standard
Discover more at https://sustainability-qrcode.ray-ban.com/en-us