The Madison D Arcs Triple Sunglasses Set are versatile sunglasses with a face-hugging shape that helps to protect you against wind and spray whilst out riding.Madison D Arcs Triple Sunglasses Set FeaturesPolycarbonate 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: This 3 Lens Pack contains a lens for bright conditions, a 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 moveLens Tech: Main Lens Light Filtration Cat. 3 suitable for Low-Light conditions, a Persimmon Cat. 1 with suitable for Medium-Light conditions and a Clear Cat. 0 with suitable for Low-Light conditionsMulti-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 breaking or bendingSecure Fit: These 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 desiredSoft Pouch: Madison has included a soft pouch for lens cleaning and protection on the move. An optional RX insert is available for prescription lensesSize Spec: Lens Width: 170mm, Lens Height: 42mm, Frame Width: 175mm, Bridge Height: 35mm, Arm Length: 130mm