Oakley HSTN Sunglasses pair Oakley’s heritage design with modern visual technology. The HSTN features a contemporary round lens shape and is available with Prizm and polarized lens options for improved contrast and reduced glare. Key attributes: Black | Nero | Acetate | 100% UV protection | Prizm lenses enhance color and contrast | Polarized option reduces glare | Prizm and polarized lens options | Multiple lens tints available | Modern round lenses | Terminal design inspired by Razor Blade | Bold frame silhouette | Dimensions & fit: Lens width: 52 mm | Bridge: 21 mm | Temple length: 142 mm | Total width: 131 mm (Size M) | Regular - Universal fit | Size M (131 mm) | Composition & care: Acetate | Wipe lenses with a microfiber cloth; store in the supplied protective case; avoid abrasive cleaners or solvents.