Lens Type: Solid (non-gradient)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: Likely 100% UV400 protection (standard for premium sunglasses)Care: Handle with care to prevent scratches on the rimless lenses and maintain the finish of the metal frame. Store in the provided case when not in use