Matthew Williamson Collection Model: Matthew Williamson Sunglasses Aviator Tortoise Shell with Blue Lenses MW154C3SUN Aviator Shape Frame Colour: Blue Tortoise Shell Temple Colour: Light Gold with Orange Earpieces Frame Material: Stainless Steel Temple Material: Stainless Steel with Acetate Earpieces Size 57-14-140 Made in Japan Nylon Category 3 Dark Tint Lenses - Blue 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. The Sunglasses are Brand New