Frame/Temple Colour: Black/Silver Frame/Temple Material: Acetate Size: 63-16-140 Model No: PG3C4SUN Made in Japan Nylon Category 2 Medium Tint Lenses - Green/Blue/Purple Mirror Nylon is a newer top-notch performance material; it combines the advantages of polycarbonate and CR-39 lenses. Nylon lenses have an outstanding shock resistance while being extremely lightweight and do not crack when drilled, making them perfect for some frame shapes. This is an exclusive collaboration with Linda Farrow that produced the Sunglasses to their highest standards. Prabal Gurung is a Nepalese-American fashion designer based in New York City.