Serengeti nunzio sunglasses polar phd 555nm lens satin black frame product description in design architecture as well as choice of materials nunzio is one progressive sunglass frame fronts and polar phd lenses both crafted with trivex are manufactured to the finest tolerances for near seamless fit and finish specifications base curve 6 rx temple length 130 mm lens size 58 x 42 x 64 mm dbl 18mm frame features genus collection stainless steeltrivex adjustable nose pads