Ray-Ban Clubmaster Reverse Sunglasses combine the iconic browline silhouette with modern reverse-lens technology for a refined everyday accessory. The square frame and bold brow line add definition to casual and smart looks. Key attributes: Brown | Havana | Nylon | UV protection | Reverse lens technology | Polarized lens option | Includes original case, cleaning cloth, certificate of authenticity and guarantee | Available in sizes 51 mm and 54 mm | Square shape | Bold brow line | Metal rim accents | Clubmaster Reverse styling | Dimensions & fit: Lens width: 51 mm or 54 mm | Bridge: 21 mm | Temple length: 145 mm | Lens height: 44 mm (51) | 47 mm (54) | Effective lens diameter: 56 mm | Regular fit | Available sizes: 51 mm | 54 mm | Composition & care: Nylon (frame) | Polyamide (lenses) | Wipe lenses with the included microfiber cloth and store in the original case.