The Crypto Sunglasses from Madison offer timeless styling with excellent field of vision. With an adjustable nose piece and temple tips, it tailors to fit all face shapes and can be pushed away from the face if extra venting is required. 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 protection3 Lens Pack: Our 3 Lens Pack contains a tinted lens for bright conditions, an amber lens for medium-light conditions and a clear lens for low-light conditions. Along with a hard case for safe transportation and a soft case for lens protection on the moveMulti-Purpose: Both versatile and stylish, Madison Optics maintain their good looks on the road or trailsTR-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 brea