Serengeti Pistoia 8298 sunglasses combine Serengeti’s photochromic, polarized mineral lenses with a bold geometric nylon frame for clear, adaptive vision in bright or changing light. Key attributes: Black | Nylon | Polarized lenses | Photochromic (light-adaptive) lenses | UV protection | Spectral control | Lens category 2–3 | Spring hinges | Prescription lens compatible | Geometric/rectangular frame | Matte black finish | Prominent lens profile | Dimensions & fit: Size: 64 x 17 x 130 mm | Medium fit | Composition & care: Nylon frame | Ultra-light mineral glass lenses | Rinse lenses with lukewarm water and mild soap, then dry with a microfiber cloth. Avoid solvents and abrasive cleaners. Store in the protective case when not in use and avoid prolonged exposure to extreme heat.