Oval Shape Frame Colour: Yellow Gold Temple Colour: Black with Red Accents Frame Material: Stainless Steel Temple Material: Acetate and Silicone Ear Pieces for Maximum Comfort Size: 63-15-135 Model No: OB38C2SUN Made in Japan Nylon Category 3 Dark Tint Lenses - Purple 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.