Ray-Ban RB4470CH Sunglasses combine a bold geometric silhouette with an ultra-light Liteforce frame and Chromance polarized copper lenses for improved contrast and reduced glare. Key attributes: Black | Sabbia Nero | Liteforce | Chromance polarized copper lenses enhance contrast | Reduces reflections for clearer vision | Improves color fidelity | Adjustable nose pads | Lightweight frame for prolonged comfort | Durable construction | Geometric frame | Contemporary bold aesthetic | Brown-toned finish | Dimensions & fit: Customizable fit via adjustable nose pads | Ultra-light Liteforce frame for comfortable, prolonged wear | Composition & care: Liteforce frame | Chromance polarized lenses (copper) | Clean lenses with a microfiber cloth; wipe frame with a soft, damp cloth; store in a protective case when not in use.