Von Zipper Sunglasses - Von Zipper Pinch Sunglasses. Black Satin - Lunar Chrome :: Men > Sunglasses. The poly carbonate lenses are distortion free and optically correct while offering maximum scratch resistance Stainless steel optical hinges for extra durability Lens: Impact-resistant. durable poly carbonate lens Von Zipper sunglasses Frame: Durable. shatter-resistant and flexible nylon grilamid frame The frame features a high 'memory' to guarantee the frame retains its shape and fit 100% UV protection Base 6 spherical lens - Base 6 creates a 'flatter' look to the frame Designed in California. engineered in Italy