Legendary design meets innovation in the RB4179 model. The full rim frame glasses belong to the Liteforce Tech generation of Ray-Ban. These are made of a new biomaterial based on semi-crystalline thermoplastic. This material is also used in the fields of aviation, automotive engineering and medical equipment. Unique for a real plastic frame are the lightness, the resistance and the high comfort. The matt black frame has a rectangular shape with a curved top line. The super-light injection molded structure ensures that the same wall thickness can be achieved as with a metal frame. Equipped with a grey tint, the model also ensures that the eyes are 100% protected from UV rays. It is also equipped with a polarizing filter. This increases the contrast and reduces glare.