Introducing Switchbacks, a lightweight frame with full shield coverage for excellent protection against the sun’s harmful rays. Switchbacks offers the unique ability to switch lenses at the touch of a button. Switchbacks is the first of Maui Jim’s collection to provide a clear lens, creating a new opportunity for glare protection in extremely low light conditions. From sunrise to sunset and beyond, Switchbacks delivers possibilities. www.designerglasses.co.uk, MAUI JIM Switchbacks frame is available in: Matte Black Rubber/Neutral Grey 523-02MR ,Matte Rootbear/HCL Bronze H523-26M, Silver/HCL Bronze AL-H523, Silver AL-C523,Silver / Neutral Grey  AL-G523,Silver/Maui HT AL-HT523 all in size 68x16.