80s Christian Dior Optyl Sunglasses Eyewear Style 2458 Made 。In excellent condition and 100% authentic vintage Christian Dior oversized sunglasses Material: Built using Optyl, a specialized, ultra-lightweight thermosetting plastic patented in the 1970s. This material allowed Dior to create large, bold, architectural frames that remained comfortable and shape-retentive. Design Aesthetic: They showcase a classic translucent amber/honey-colored butterfly silhouette accented with slim metallic gold temples and warm orange-tinted gradient lenses Historical Significance: These frames hail from a golden era of eyewear production when Dior partnered with specialized manufacturers in Germany and Austria to pioneer avant-garde runway silhouettes