Ray-Ban RB4181 Sunglasses pair a clean, classic square silhouette with a comfortable frame and optional polarized crystal lenses to reduce glare and enhance color contrast. Key attributes: Brown | Havana | Acetate | Reduces glare and increases color contrast | 100% UV protection | Comfortable, stable fit | Polarized lenses available | Suitable for a wide range of face shapes | Clean, classic square silhouette | Slightly sinuous front profile | Signature Ray-Ban temple shape | Dimensions & fit: Lens width: 57 mm | Bridge width: 16 mm | Temple length: 145 mm | Lens height: 45 mm | Medium-large fit | Suitable for most face shapes | Composition & care: Frame: Acetate | Lenses: Crystal (glass) | Wipe lenses with a microfiber cloth; avoid abrasive cleaners and solvents; store in protective case when not in use.