Barton Perreira Norton Round Optical Frame pairs a minimalist round silhouette with a classic keyhole bridge for a balanced, wearable look. Designed for everyday wear, Norton emphasizes clean lines and refined proportions. Key attributes: Black | Blt | Acetate | Handmade in Japan | Keyhole bridge | Prescription-ready | Round lenses | Minimal silhouette | Dimensions & fit: Available in multiple eye sizes: 46, 48, 50 | Composition & care: Acetate | Clean lenses with a microfiber cloth; avoid abrasive cleaners and solvents; store in a protective case when not in use.