Full speed ahead. The Smith Shift XL MAG sunglasses are an oversized shield made for maximum coverage and performance on the bike and trail. Their wide-shield coverage maintains full vision at speed while ChromaPop™ brings every detail of the road and trail to life with enhanced contrast and natural color. Smith MAG interchangeable lenses use a magnetic clip for quick, fingerprint-free lens changes. Combined with a lightweight frame and non-slip nose pads, they stay put through long, hot climbs, fast descents, and extended trail time. </br></br> <b> Fine-tune your kit with additional or replacement lenses for sunny conditions, variable conditions, and cloudy conditions. <a href="https://www.smithoptics.com/en_US/p/lens/shift-xl-mag-replacement-lens-replacement-lens/SHIFT-XL-MAG-REPLACEMENT-LENSES.html" title="Go To Shift XL MAG sunglass replacement lenses"> Expand your view here.</a></b>