Norton Eyeglasses by Barton Perreira. Shape: Round, Material: Acetate, Color: Black, Blue Smoke, Cabernet Tortoise, Champagne, Chestnut, Crystal, Desert Sky, Heroine Chic, Hush, Matte Black Amber Tortoise, Matte Dusk, Matte Golden Honey, Matte Tortuga Gradient, Midnight, Olive Green, Pewter / Bottle Green Clip Only, Pewter / Noir Clip Only, Raven Tortoise Gradient, Tortoise Stone Gradient, Turtle Dove Gradient, Umber Tortoise, Size: 46-19-145, 48-19-148, 50-21-153. Meticulously crafted by hand in Japan, a single pair of Barton Perreira frames is a real work-of-art with exquisite details and stunning silhouettes. Every facet and every angle of Barton Perreira glasses is brought to life with virtuosity and precision. Made from the premium-grade Japanese acetate and titanium, they fit like a tailored suit. In addition, the frames are wired with an adjustable foundation to align perfectly with the wearer’s face, while maintaining its shape.