Sara proves that fashion-forward and high-tech are definitely not mutually exclusive. By using Trivex for both the frame front and exclusive Polar PhD lenses, Serengeti has created premium eyewear that delivers chic appeal, unmatched comfort and visual acuity. Base Curve: 6 RX. Temple Length: 130 mm. Lens Size: 62 x 44 x 63 mm, DBL 16mm. Frame Features: Genus Collection - Stainless steel/Trivex, adjustable nose pads.