Frame/ Temple Colour: Clear Frame Material: Acetate Temple Material: Acetate with Silver Stainless Steel Earpieces and Brand Decoration on Temples Size: 50-22-143 Model No: KVA47C2SUN Made in Japan Nylon Category 2 Medium Tint Lenses - Grey 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.