Serengeti Lupton 2.0 Sunglasses combine an ultra-light rimless frame with PhD 2.0 Trivex lenses for clear, glare-free vision during driving and everyday use. Key attributes: Black | Grilamid (nylon) | Photochromic (light-adapting) PhD 2.0 lenses | Polarized lenses | Spectral Control (enhanced contrast) | UV protection up to 400 nm | Impact-resistant Trivex lens material | Grip-embedded temple tips | Lightweight, flexible frame | Integrated hinges | Prescription compatible (RX available) | Rimless frame | Featherweight minimal profile | Substantial temple design for added stability | Dimensions & fit: Lens width: 64 mm | Bridge: 18 mm | Temple: 130 mm | Medium-large fit | Composition & care: Frame: Grilamid (nylon) | Lens: Trivex (PhD 2.0) | Lens coatings: hydro- and oleophobic front coating, anti-fog back coating, polarization | Rinse lenses with warm water and mild non-abrasive soap; dry with a microfiber/optical cloth. Do not use solvents, abrasive materials or household cleaners. Store in the protective case and avoid prolonged exposure to extreme heat.