The Serengeti Lupton 2.0 Sunglasses pair an ultra-light, fully rimless frame with Serengeti’s PhD 2.0 photochromic, polarized lens technology for clear, comfortable vision while driving or during active use. Key attributes: Black | Indeterminate | Nylon | Photochromic (light-adjusting) lenses | Polarized | UV protection up to 400 nm | Impact-resistant lenses | Hydro- and oleophobic coatings | Grip-embedded temple tips | Rubber nose pads | Integrated hinge | Fully rimless silhouette | Substantial temple design | Minimalistic, low-profile look | Dimensions & fit: Lens width: 67 mm | Lens height: 43 mm | Bridge: 18 mm | Temple: 130 mm | Base curve: 8 | Medium universal fit | Composition & care: Frame: Grilamid BTR (eco-nylon) | Lens: Trivex (PhD 2.0) | Temple tips: Rubber | Wipe lenses with a microfiber cloth. Avoid abrasive cleaners and high heat. Store in a protective case when not in use.