Materials: Metal frame, Crystal lenses.UV Protection: 100% UV protection (UVA/UVB).Lens Technology: G-15 lenses provide natural vision, enhanced contrast, and excellent clarity.Durability: Ray-Ban sunglasses are known for their durable construction.Clean lenses regularly with the provided cleaning cloth and a gentle lens cleaning solution.Avoid using abrasive materials or harsh chemicals.Store in the protective case when not in use to prevent scratches and damage.Avoid leaving sunglasses in direct sunlight for extended periods, especially in hot environments (e.g., car dashboard),as extreme heat can damage the frame and lenses.