The classically styled Cipher frame offers an excellent field of vision and superb eye protection. Half frame design is lightweight and optimised for guaranteed performance on any terrain. Multi-Purpose: Both versatile and stylish, Madison Optics maintain their good looks on the road or trails. Polycarbonate Lenses: Optics from Madison meets the highest standard for eyewear; ISO 12312. The interchangeable polycarbonate lenses are both impact and scratch-resistant. The lenses offer both supreme optical clarity and UV-A and UV-B protection. TR-90 Frames: TR-90 plastics are lightweight, flexible and durable. TR-90 plastic memory allows them to flex and return to their original shape without breaking or bending. Secure Fit: Our frames work seamlessly with your helmet with non-slip rubber tips for maximum comfort and security. The flexible nose-piece allows you to dial in the perfect fit, adjusting for extra venting if desired. Storage: All our sunglasses come with a zip-up hard case to keep them safe when not on your face and to store spare lenses and the soft cleaning cloth.