Buddhist Punk Collection Frame Colour: Silver Temple Colour: Silver and Black Frame Material: Stainless Steel Temple Material: Stainless Steel With Black Acetate Earpieces Size: 60-20-140 Model No: 6BP3C3SILVER Hand Made Nylon Category 2 Medium Tint - Grey Graduated Lenses 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.