Hugo HG 1393 Optical Frame by Hugo combines a classic rectangular silhouette with a lightweight cellulose acetate construction for everyday prescription wear. Key attributes: Blue | Blu | Cellulose acetate | Prescription-ready | Prescription-compatible | Includes protective case and cleaning cloth | Rectangular full-rim frame | Classic, versatile silhouette | Dimensions & fit: Lens width (caliber): 55 mm | Bridge: 17 mm | Lens height: 39.1 mm | Temple length: 145 mm | Medium fit (size M; caliber 55 mm) | Recommended for oval, heart and round face shapes | Composition & care: Cellulose acetate | Clean lenses with a microfiber cloth and store frames in the protective case when not in use. Have prescription lenses fitted by a qualified optician.