Montblanc MB0428S Sunglasses pair refined metal framing with grey bio-nylon lenses for polished, everyday sun protection. Key attributes: Silver | Grey | Metal | 100% UV protection | Supplied with original Montblanc case and cleaning cloth | Aviator (panthos) frame shape | Tubular metal temples with injected tips | Snowcap emblem on temples | Dimensions & fit: Lens width: 51 mm | Bridge width: 20 mm | Temple length: 145 mm | Lens height: 46 mm | Frame size: S (51-20-145) | Composition & care: Frame: Metal | Lenses: Bio nylon | Clean lenses with warm water and a microfibre cloth; avoid abrasive cleaners.