Bollé Nerox Nav Sunglasses pair a sporty square silhouette and double bridge with polarized lenses for clear vision in bright outdoor conditions. Key attributes: Black | Acetate | Polarized lenses | Category 3 sun protection | Anti-scratch coating | Oleo/hydrophobic coating | UV protection | Five-barrel flex hinge for comfort | Prescription lens compatible | Sporty square silhouette | Double bridge | Square frame shape | Dimensions & fit: Lens width: 55 mm | Bridge: 17 mm | Temple: 140 mm | Large fit | Composition & care: Frame: Acetate 54% | Lens: Nylon 39% | Metal parts | Clean lenses with a microfiber cloth. Do not use abrasive cleaners. Store in a protective case when not in use.