Serengeti Lupton 2.0 pairs an ultra-light, rimless frame with PhD 2.0 photochromic polarized lenses for clear vision while driving and during active outdoor use. Key attributes: Black | Indeterminate | Nylon | Photochromic lenses (PhD 2.0) | Polarized lenses | Spectral control | Impact-resistant Trivex lenses | Hydro- and oleophobic front coating | Anti-fog backside coating | Base curve 8 | Lens category 2 to 3 | Grip-embedded temple tips | Rubber nose pads | Lightweight, flexible frame | Integrated hinge | RX prescription available | Fully rimless frame | Substantial temple design | Matte finish | Minimalist silhouette | Dimensions & fit: 64 x 18 x 130 mm | Medium large fit | Composition & care: Nylon frame | Trivex (PhD 2.0) lenses