Barton Perreira Princeton Sunglasses combine handcrafted Japanese construction with a timeless round silhouette. They are designed for dependable everyday sunwear and come with a protective case and cleaning cloth. Key attributes: Gray | Zyl | Includes case and cleaning cloth | Round frame | Handmade in Japan | Dimensions & fit: Eye size: 49 mm | Bridge: 22 mm | Temple: 148 mm | Composition & care: Frame: Zyl (zylonite acetate) | Lens: CR-39 or mineral glass (dependent on color) | Clean lenses with the included cloth; store in the supplied case.