Frame Material: Metal (gold-tone accents), high-quality acetate with tortoiseshell pattern for the templesLens Material: High-quality polycarbonate or glass (typical for Cartier, offering UV protection)UV Protection: 100% UV400 protection (standard for premium sunglasses)To maintain the quality of your Cartier sunglasses, clean lenses with a soft, lint-free cloth and a specialized lenscleaning solution. Store them in their protective case when not in use to prevent scratches.